Should We Adjust How We Evaluate Pitching Prospects?

Evaluating pitchers is a real challenge. A combination of experience and knowledge can help one to better understand how variables like velocity, spin, and pitch mix translate to the majors. Even with that information, though, the influence of other factors — like injury risk, like a pitcher’s likelihood of responding to mechanical or mental adjustments — creates a great deal of uncertainty.

Nor is this a challenge that faces only prospect analysts like myself and Eric Longenhagen: even front-office execs who have the benefit of substantial resources — in the form both of data and personnel — have trouble reliably projecting outcomes for otherwise similarly talented young arms.

In my role as a talent evaluator both with FanGraphs and with a few major-league clubs, the question of how best to assess pitchers is obviously one to which I’ve returned with some frequency. In my recent efforts to get some final looks at certain top pitching prospects, however, I began to rethink how Eric Longenhagen and I should approach rankings this offseason. Three prospects, in particular, help to illustrate my concerns.

Tigers righty Matt Manning was the ninth overall pick in 2016, is an athletic 20-year-old who stands 6-foot-6, and was promoted to Double-A last week. In addition to that, he sat 94-96 and hit 98 mph in my look, mixing in a spike curveball that flashed 65 on the 20-80 scale. The positives here are numerous, and very few other minor leaguers could match even a few of these qualities.

The issue with Manning is the same as it was in high school and earlier this season: the consistency of his stuff, the consistency of his command, and the quality of his changeup. At 86-88 mph, Manning’s changeup was firm and lacked life, grading fringe-average just once or twice, often out of the zone. Manning works up in the zone with his four-seam fastball, as the pitch and its plane dictate he should, but the pitch is straight and his command of it is below average. When Manning is having trouble throwing an offspeed pitch for a strike, hitters can sit on the fastball and will have a good chance of getting a straight, elevated strike. This very weakness led to two homers the night I saw him.

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His curveball got more consistent as the night wore on, a somewhat common development for young power pitchers who gain more feel when the nerves wear off and fatigue prevents them from overthrowing, but his changeup didn’t improve. Manning is a great athlete for his size. Because of that, his shortest path to a big-league starting role is probably to address his command issues by adopting a delivery that allows his athleticism to shine through, aids the repeatability of his mechanics, and allows him to throw more strikes. This could help everything play up a bit and possibly even add movement to his changeup.

As it is now, it appears as though Manning is over-striding. In concert with a slight cross-body delivery, the result is a complication of what could otherwise be a simple motion. In its current form, Manning’s delivery creates some head action at release, among other things. It also makes the act of releasing the ball more physically stressful and thus harder to replicate, which leads to the command issues.

While his numbers have been pretty good this year, Manning belongs to that class of pitcher who will likely have issues with Triple-A and MLB hitters — hitters, in other words, who can catch up to mid-90s velocity and will wait for a strike on an offspeed pitch. In the lower minors, only some hitters have the skill and discipline to do that.

There’s a lot of similarities with Rays righty Tyler Glasnow at the same stage, including the size, the stuff, the extremely long stride, and a profile that may not lead to a challenge until the upper minors. Glasnow took a little longer than expected to work these things out, and I fear Manning may have the same issues until he improves his consistency.

White Sox righty Dylan Cease has a profile similar to Manning’s, with comparable raw stuff. Cease held 95-97, touching 98 mph, into the fifth inning of the start I attended. His mid-70s curve was above average to plus all night, but his control/command made it difficult to project him comfortably as a starter.

As with Manning, Cease’s heater has hop up in the zone. Cease’s plays even better in games, though, because of the slow-to-fast tempo in his delivery that makes the velocity that much more jarring to the hitter. As was true with Manning, Cease’s curve was also inconsistent, but his changeup flashed average a few times and had a good velo differential at 80-82 mph. When considered all together, his current arsenal is more typical of a big-league starter.

The key point with Cease, for me, is that he lacks the feel to start. In Manning’s case, he’s still young and tall (big frames take the longest to develop command) and he has something clear to improve in his delivery, so it isn’t hard to imagine improvement. In Cease’s case, though, he’s two years older, lacks real height, has already endured Tommy John surgery, has trouble holding runners (or did in my look), and has failed to develop much since his underclassman days in high school. Also, there isn’t a clear flaw in his delivery that, if addressed, could unlock more feel.

Cease’s delivery is fine, but very few big-league starters have this kind of size, health history, and delivery tempo. He’s been showing us what he’s good at for a while (swing-and-miss fastball, chase-pitch curve, usable changeup) and that’s useful in the current game more than ever; it probably just won’t be as a 200-inning starting pitcher. Cease actually fits well in the Rays’ mold of the second pitcher after the opener — and, to be fair, he’s made strides this year in terms of durability and figuring out how to succeed with his skillset. Sometimes these types of prospects discover feel later in their careers, but there are enough data points here to point to a hybrid role as a best fit.

Luckily, the reports we’ve been getting this year generally cite the same strengths and weakness I saw during my looks at both pitchers — and further support their rankings at the site. Some scouts prefer Cease and think he will be a starter. The two are pretty similar in broad terms, but Manning has the advantage in age, size, and health history — while also having a slightly better chance to start, in my opinion — but they’re still very close.

You can see why I group Cease and Manning together. You can probably see, just from the video, that Brendan McKay is almost the opposite of these two:

McKay was a two-way player in college at Louisville before going fourth overall last summer. He has been gaining momentum this year as a pitcher who acts as a DH in the big leagues, similar to the way Shohei Ohtani has been used for the Angels. McKay has slimmed up his frame and found a little more velocity this year — sitting 93-95 and hitting 96 mph in my look — but doesn’t rival either Cease or Manning in terms of arm speed. While he didn’t throw any curves to batters during my look, he still went to the pitch during his warm-up period between innings. It’s been his best offspeed pitch (flashing 60), so it appears he was just working on other pitches in the outing. McKay threw an 86-91 mph cutter and an 84-87 mph changeup, both of which project above average — as does his command.

Before the draft last summer, more than a few scouts thought McKay was a primary hitter, projecting 60 hit and game-power tools. This hitting ability gives McKay both a unique backup plan (if he fails at pitching or gets hurt) and a concurrent plan (DH when he isn’t pitching). That seems less important now than it was last summer, as it’s appearing more likely that McKay’s mix of above-average stuff and command will be his primary meal ticket at the big-league level.

***

My interest in these three specific pitchers relates to my work on last winter’s top-100 list with Eric. He and I purposely moved pitchers, as a population, down our rankings a bit to better reflect how many wins pitchers create relative to position players. Traditionally, there appears to be too little consideration in these lists for pitcher attrition. (This is the case for our own old lists, as well.) It’s easy to downgrade the Cease/Manning types due to questions about their future roles, but it’s also just as easy to boost them on the grounds that they could be the power-over-feel types who turn into Max Scherzer.

With the increasing emphasis on velocity in today’s game, it seems counterintuitive to start celebrating the merits of command-oriented pitchers — nor am I proposing something as simple as that. I remain reluctant to project much value for legitimate soft-tossers — and there are plenty of data points to support that reluctance. That said, this season has witnessed the rise of some young pitchers who, like Indians RHP Shane Bieber and Braves RHP Bryse Wilson, feature above-average stuff and command — pitchers, that is, more in the mold of Brendan McKay than Cease and Manning (the latter two of whom possess plus stuff but only fringe-average command).

You could argue that the only other pitchers on our lists who might belong to the McKay/Bieber/Wilson class are Brewers RHP Corbin Burnes, Rays RHP Brent Honeywell (if he returns from Tommy John surgery as the same pitcher), Athletics LHP Jesus Luzardo, Indians RHP Triston McKenzie, Tigers RHP Casey Mize, Padres RHP Chris Paddack, and Braves RHP Mike Soroka. Reasonable people could suggest a list even shorter than that.

These pitchers are also mostly ranked higher than the Cease and Manning types anyway, so you could ask if I’m just saying I believe more in highly ranked prospects than lower-ranked ones. My instinct says that the stuff-over-command types make up a disproportionate amount of the washouts on these lists, but we continue to rank them highly so we don’t miss out on hailing the next ace as early as other lists. You could argue, even if we knew that was true, that it was worth an adjustment to our process if we’re less likely to correctly project the next ace that emerges.

Eric and I have said we think the big lists (our own past efforts included) have underrated the MLB-ready, two- to three-win type of player in favor of the upside A-ball prospect. We entered last offseason with this thought — and pitcher-attrition metrics — in mind. It’s hard to say how this hunch will affect any specific pitching prospects in terms of ranking, but it’s definitely something at the front of my mind as we get closer to list season.





Kiley McDaniel has worked as an executive and scout, most recently for the Atlanta Braves, also for the New York Yankees, Baltimore Orioles and Pittsburgh Pirates. He's written for ESPN, Fox Sports and Baseball Prospectus. Follow him on twitter.

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LHPSU
7 years ago

“My instinct says that the stuff-over-command types make up a disproportionate amount of the washouts on these lists”

I would think that’s baked in by design, no?

ThomServo
7 years ago
Reply to  LHPSU

“My instinct says that the stuff-over-command types make up a disproportionate amount of the washouts on these lists”

A huge shortcoming with this eye-test, list process is the lack of accountability and review.

It doesn’t appear that Kiley/Eric are tracking their projected FVs to test for accuracy. Therefore, as with the whole process, they are taking guesses about how accurate or inaccurate their system is.

A competent system will be transparent, future-proofed, and will provide comprehensive coverage and analysis of the talent-ID method. Reading Eric/Kiley work, it becomes obvious that there isn’t a serious methodology, with back-testing and proofs-of-works to show predictive value and insight. Instead, it’s just guess work.

That’s why the author has to rely on instinct to guess that the guys with high-stuff-low-command grades are failing to live up to FV grades. If the work was being done in even a remotely competent way, the author would be able to make much more certain observations, i.e. “players with a ‘Stuff-Command’ discrepancy of 20 or greater, underachieved FV projections by 38%.”

In reality, the methodology being used is nowhere near serious.

LathundMember since 2025
7 years ago

I really enjoy these articles that go into the method behind prospect evaluations, and how you actually land at a certin grade or ranking. And how there is no easy answer on how to rank these two categories of players. I’d love to see more of these process-oriented stories, and the various conundrums you wrestle with in making prospect rankings and evaluations.

Billy Corman
7 years ago
Reply to  Lathund

I got more out of this piece than most articles here recently. I’m not slamming the current roster of writers by any means. I was engaged and the content was exemplary.

Johnston
7 years ago
Reply to  Billy Corman

It was well-written, it was about real baseball, and there wasn’t a trace of politics in it. I loved it.

sadtromboneMember since 2020
7 years ago

I think the way Kiley’s thinking about this is the right way. Because while the stuff-over-command types have a huge washout rate, so do the command-over-stuff types. What they have in common is that they are both pitching prospects, which are inherently risky. You need ’em to win because quality pitching costs a fortune on the FA market, but each one individually is a terrible asset because it’s likely to break or bust.

I think that Shane Bieber was an exception. If you have 70 command, that’s obviously a valuable pitcher. I don’t think you should count on seeing too many more Shane Bieber’s. I think that Kiley’s rating the Corbin Burnes’s and Brendan McKay’s fairly (and maybe even accurately as a group) because they have good “stuff” that plays up because of the plus command. Gonna see a lot more of them than the guys with super-freaky command like Bieber (which you won’t see all that often anyway).

isavage
7 years ago
Reply to  sadtrombone

It’s not like Bieber’s a soft tosser either. His raw velocity is good, his last couple starts he’s averaged 94 mph

sadtromboneMember since 2020
7 years ago
Reply to  isavage

I’m sorry, a guy who averages 94 with 70-grade command? He was ranked waaaaaaaaaaaaaay too low.

dl80Member since 2026
7 years ago
Reply to  sadtrombone

He’s never had overwhelming strikeout numbers, and very high BABIPs in the low minors probably obscured his ability some. Since he gets so many grounders, a high BABIP may be his perpetual issue (he’s at .368 this year).

dleoboydMember since 2016
7 years ago
Reply to  isavage

Bieber hasn’t always thrown as hard as he does now. He was definitely a soft-tosser until his velo spiked during the 2017 season. Before that he was more of an 89-91 guy.

channelclemente
7 years ago
Reply to  isavage

Derek Rodriguez, Pudges’ son, arrived to the Giants with a similar rap. For month’s he’s really made a mess of the prognosticators.

nolaneatherton
7 years ago

I think the big takeaway from this article is that command is almost always needed regardless of stuff, especially when projecting starting pitchers. I have always wondered why it is commonplace to try and add command to plus stuff and velocity pitchers, but not the other way around. I suppose it’s due to the (fading) stigma surrounding weighted balls and aggressive throwing programs like Driveline Baseball. There are plenty of plus plus command guys in MIAA and other small programs that throw 81 to 84, why not take a chance on a large quantity of those guys and see which ones can throw 92 after lifting hard, eating right, and getting on a weighted ball program. They are cheap and plentiful. It’s not sexy, but it would work.

Trotter76Member since 2018
7 years ago
Reply to  nolaneatherton

I wonder if guys who command the zone but in the low 80s would be so overexerting to get another 8-10 mph that they would lose their command. I’m not knowledgeable of those training programs and their effects, but that would be my hunch.

JoserMember since 2021
7 years ago
Reply to  nolaneatherton

Is that true, though? We’re already seeing a lot more pitchers who can throw 92+ than we ever used to. Where are they coming from, if not through regimens like you describe? Not everyone has the capability to throw that hard for multiple pitches in every start in every season, even when you’re talking about the subset of the subset of athletes who are trained pitchers. (And that’s assuming, as Trotter76 says, they keep their command while increasing their velo). At some point you’ve mined the portion of the bell curve that can be trained and exercised into those upper reaches of velocity, and there’s no more to be had out of each minor league or pre-professional pool. I agree we’ve probably not reached that point yet, but might we be close?

BryzMember since 2019
7 years ago
Reply to  nolaneatherton

It would be helpful for Kyle Boddy or someone else from Driveline to weigh in but my understanding is that gaining 10 MPH is not possible for someone that’s already a serious athlete.

Rational FanMember since 2025
7 years ago

Any credence to an organizations ability to make the proper adjustment to get the most out of a starters command?

Ie. White Sox history with significant command corrections from many of their arms – going back to Matt Thornton and continuing to kopech. It’s the one reason there is hope giolitos correction… it has led the organization to take more of a risk on these arms out of belief in their philosophy. It’s not a guarantee they fix it and it has led to failures in the past for the organization but its allowed them to take more risks. This is why I believe cease has a better chance of getting there… that paired with the white Sox history of keeping arms healthy seems to speak we for cease.

On a counter. The white sox are poor at developing position players. So I have less faith in their ability to develop toolsy position players.

MikeSMember since 2020
7 years ago
Reply to  Rational Fan

I think – rightly or wrongly – most pitching coaches and organizations feel that you can teach a power pitcher to control it much more easily than you can improve a pitcher’s stuff.

dl80Member since 2026
7 years ago
Reply to  MikeS

That SEEMS to make sense to me, but I don’t know if the data bear it out. Working to correct mechanics, moving on the rubber, and switching to a full-time stretch delivery (a la Carrasco) seems easier than getting a guy to somehow gain MPH on his fastball or fix a so-so changeup.

Jetsy Extrano
7 years ago
Reply to  dl80

It seems to me that if you can repeat inefficient mechanics you probably could repeat efficient mechanics. But if you keep splattering around your efficient mechanics, no evidence you’ll ever stop splattering.

grandbranyanMember since 2017
7 years ago

Brewers have the 2nd best record in the NL currently & also probably have one of the least “stuff”-y rotations in MLB.

Now a lot of their success is due to relief pitching & defense (which is CRAZY to write as a longtime Crew fan), but it does seem like somewhat of an organizational philosophy to eschew the huge velocity guys.

Maybe it’s because Derek Johnson might just be a magician, maybe it’s due in part to their market size & resulting limited budget, maybe Stearns sees value to be mined in this vein (hello Jhoulys Chacin & Wade Mikey), or maybe its some weird combination of the afore & as of yet unmentioned?

sadtromboneMember since 2020
7 years ago
Reply to  grandbranyan

I don’t think the Brewers place a high value on velocity, but the fact that they have so few guys with crazy “stuff” probably has more to do with their habit of drafting position players and arms-who-can-move-fast up top. I think they would have taken Brendan McKay over Hunter Greene, but I think Mackenzie Gore vs. Hunter Greene would have been a tossup.

bosoxforlifeMember since 2016
7 years ago
Reply to  grandbranyan

Indeed, you might want to check Derek Johnson’s pants leg for a magic wand. Chacin had a reasonably good season last year and was a good signing but getting consistently good performances from Wade Miley borders on supernatural forces at work.

JV19
7 years ago
Reply to  bosoxforlife

I disagree on Miley. He’s always been a pretty competent innings eater, and his FIP has been pretty constant throughout his career (Baltimore not included). He’s also pitched much better in the NL than AL. Derek Johnson has him resembling his early career self in terms of BB/9 and K/9. It looks like he just found something in his mechanics or tweaked his pitch selection.

Stupideas22
7 years ago

Most of the pitchers you mention do have very good stuff, just not off the charts great. Honestly I think we always end up falling a little too hard for big fastball numbers, and then they get to the big leagues and it’s less than advertised, straight as an arrow, and on a 3-0 count. Give me 94 worming into the batters’ hands over 100 mph straight to the heart of the plate any day. Even with your mention of Scherzer, I would still argue that most of the frontline pitchers were the ones who had already figured out the tough skills like command, consistency, maturity etc. by the time they got to the big leagues, and then with the help of big league coaching and the maturity of the body into the mid – late 20’s the stuff all of a sudden ticks up and they become a beast.

Kibber
7 years ago

Kiley, we of the MATT.DAMON. collective mentality simply do not deserve you or these types of articles. You are too good to us. Thank you.

Rational FanMember since 2025
7 years ago

I would also say there have been a lot more Max Scherzers (power arms who figured it out, see Trevor Bauer recently) than there are Mark Buehrles in the history of the game. There’s more margin for error the better your stuff. While guys who can pitch like Buehrle and Hendricks are underrated as prospects, I think that’s the case because many more guys with their profiles can’t play up.

Also, I think we label big pitchers as busts far too soon; Glasnow isn’t a bust, he’s still young and Randy as well as other big pitchers have proven that it takes longer to get all those parts aligned.

dl80Member since 2026
7 years ago
Reply to  Rational Fan

Good point. It took Carlos Carrasco forever to finally put everything together, though it was more about feel than anything else. He’s 6’3, so not a giant, but he is a good example of a guy who took a long time.

emh1969
7 years ago
Reply to  dl80

Did he? Carrasco was pretty decent at age 23-24, putting up a 4.41 ERA and a 4.24 FIP in nearly 170 IP across the two seasons.

He then had Tommy John surgery and missed his age 25 season and most of his age 26 season. He then broke out at age 27.

Obviously we have no way of knowing but without the surgery, maybe he breaks out at age 25.

Pirates HurdlesMember since 2024
7 years ago
Reply to  emh1969

Carrasco wasnt throwing hard in his 1st incarnation (92ish). When he came back from injury he added velocity in the pen (4ish) then took it with him to the rotation somehow.

dl80Member since 2026
7 years ago

He’s pitching exclusively from the stretch now, ever since that bullpen stint, so maybe having a more repeatable delivery somehow helps with the velocity. I’m sure Danny Duffy wishes he could have kept his!

RoyalsFan#14321Member since 2024
7 years ago
Reply to  dl80

I wish he did too.

dl80Member since 2026
7 years ago
Reply to  emh1969

Some of that was superficial success, though. He had middling to average strikeouts in the high minors and majors after the trade from the Phillies and they dropped to bad in 2011 (6.14 K/9).

It wasn’t until switching to the stretch full-time in 2014 that he began posting very high K rates in the majors, though he did have a great year in AAA in 2013.

emh1969
7 years ago
Reply to  dl80

One correction to my comment above. Carrasco only missed his age 25 season due to TJ.

Anyway, I stand by my original point. I honestly don’t see how missing a full season due to TJ surgery can be ignored when talking about how quickly or slowly a pitcher developed.

Carrasco was developing just fine before the TJ. Was he a finished product? No, of course not. But the changes that he needed to make to become a finished product might have happened sooner without the elbow problems and subsequent surgery.

BTW, his low strikeout rate was likely in 2011 was likely the result of the underlying problems that eventually led to TJ surgery. He missed time the beginning of the year due to elbow pain so it’s likely that he was pitching through pain for most of the year. Despite that, he had a solid 3.54 ERA through his first 15 starts. He then bottomed out, putting up a 7.92 ERA in his subsequent 6 starts before being shut down and having surgery.

Slappytheclown
7 years ago

Yes, Command is the most important item to a frontline starter, but it usually comes in later. IMO a pitcher needs a couple of things to success.

1. One great pitch. Fastball (velocity) could be one of those pitches and is the most obvious. A couple people have noted that ‘straight’ fastballs get hit but that is only true if command is an issue. Schilling had the straightest fastball I’ve ever seen but the guy could put it in any corner on any batter on any count. Try hitting 97 inside/low painted even if it is straight. But, it could be a curveball like Kluber, or a slider like Archer. If you’ve got one devastating pitch, it’s a start and you need one to be a #1 or 2 plus…
2. Two other offerings that are at least 45. A pitcher can survive with two 65 type pitches (see Archer, Chris) but he’ll never be an ‘ace’ without three pitches to mix and at least one that is 65 to 70.
3. Control. This comes last, usually in the big leagues. Maybe it’s an issue with guys figuring out who to challenge and when, or a mental thing with being ok giving up more hits and/or trusting your defense in order to throw more strikes…but what ever it is, take a look at the list below with BB numbers the first year or so and then a rough average rest of career and/or prime.

Hamels – 3.26 rookie year to ~ 2.0 to 2.25
Schlling – ~4 rookie years to 2 or below
Kershaw – 4.79 to 2 or below
Scherzer – 3.33 to 2.25 or so
Price – 3.79 to 2 or 2.5
Sale – 3.42 to 2 or so
Snell – 5 to 4 to 3 to …?
Randy Johnson – 6 to 2 or 2.5

That’s command improvement and that will move you into the true ace 4-5+ WAR consistently area. Some guys get it over time, some guys get injured before they get it. some guys won’t get it and get moved to the pen or other (see guys like Tyler Chatwood, Tyler Mahle, or Bud Norris). Glasnow the jury is still out.

MRDXolMember since 2021
7 years ago

What about Michael Kopech? He’s the prototype of power-over-feel, but has apparently largely discovered that by simply dialing it down and sitting 96-98 instead of 98-100.

Rational FanMember since 2025
7 years ago
Reply to  MRDXol

The thing I think many miss is dominant stuff power arms dont need to learn to pitch in the minors because they get by on their stuff alone… while control oriented arms need to learn to pitch because that’s how they’re gonna make it to the next level. Predicting who will and wont learn to pitch and repeat their delivery is a lot less scientific than projecting how someone’s raw stuff will play in the MLB.

ThrasiusMember since 2016
7 years ago
Reply to  Rational Fan

@Rational Fan – this is the answer. It’s all about the incentive structure as the pitchers develop. In the low minors – and even high minors for some – pitching prospects with great stuff have no incentive to improve their command, at least for the vast majority of prospects that can’t think ahead like other 18-22 year olds. That’s certainly not the case for pitchers with bad or middling stuff. The latter prospects have no choice if they want to get to the show. They do it just to survive.

signedepsteinsmother
7 years ago
Reply to  Rational Fan

That just seems to simplified to me. If everyone who had high velocity could dial it back and improve command, they would. Velocity, along with control plays, and it has been well documented. It allows a margin of error and secondaries to play up.
I find it hard to believe that even the worst org. isn’t focused on the optimal outcome for any individual pitcher.
Pitching is hard.

Dominikk85Member since 2020
7 years ago

Btw I think there is a general floor over ceiling trend in the game. This doesn’t only reflect in pitcher vs hitter but also in the precentage of college players drafted which is higher than like 20 years ago.

Last draft the top5 all were college players which is unusual, especially that teams are willing to take polished low upside college bats very high.

Today’s GMs rather take the “safe” 3.5 war hitter over the toolsy potential 5 tool star who could be an 8 win guy or bust.

ThrasiusMember since 2016
7 years ago
Reply to  Dominikk85

Wasn’t the last draft relatively weak, especially for high schoolers? I could be wrong. However, I feel like Eric and Kiley mentioned that at least a few times.

BTW, I’m not disputing your point in the entirety.

ThomServo
7 years ago
Reply to  Dominikk85

“My instinct says that the stuff-over-command types make up a disproportionate amount of the washouts on these lists”

This is a false dichotomy with a touch of traditional scouting mythos.

Players scouted as being “toolsy, 5-tool players” are not necessarily more likely to put up big 8-WAR seasons than the players who appear to be ‘safer, more like 3.5 WAR’ position players.

Instead, because scouts are so bad at identifying defensive and baserunning talent, as well as ability to draw walks or add power- it’s simply the case that scouts can’t tell who a potential 5-tool player is. The eye testers never saw Altuve, Betts, Donaldson, Ramirez, Chapman, Cain, Lowry and the like as 5-tool, 5+ WAR stars.

You are correct that the eye testers and traditional scouts love guys with super obvious tools- but that’s just because every 8 year old and every 75 year old can notice that Vlad Jr or Robles is tooled up. The scouts don’t have a serious method to measure anything really, so their grades are not particularly insightful or predictive, often failing to distinguish early-developers from players who project to grow into their upside, etc.

signedepsteinsmother
7 years ago
Reply to  ThomServo

Baseball is hard. I get your trope, you can identify and give more weight to BSR and defense. But ultimately the hit tool has to play. And how do you ‘identify ‘ adding power any more then the current measures?
Pitching wise, certainly you could measure spin rate etc. over the eye test, but how does that get you any closer to an individual pitcher making it mean something.

jacob2Member since 2020
7 years ago

I assumed this article would focus on players who haven’t produced but still earn high prospect rankings due to their stuff. I have always felt like I tend to disagree with pitcher rankings because I place a higher premium on on-field success vs. future projection. I’m also wary of the guys whose stuff is iffy but get by with great command because so often we find the command wasn’t good enough when they reach MLB.

I have a hard time watching Cease and seeing a reliever. I think I get what is meant by a lack of feel here, but the arsenal, production, and presence are really impressive to me. I don’t care about the height; I think there are selection bias issues with that.

Manning has some advantages in terms of deviating from his current status due to his age and lack of TJS, but he’s also proven less in my view. I was very skeptical of Cease until I saw him absolutely dominate AA for 10 starts. Manning still has the mountain to climb and he may just do so. I’m not in love with his motion, at least in the confidence it gives me about his ability to be a starter.

Anthony Princeton
7 years ago
Reply to  jacob2

FWIW, Bruce Levine was on WSCR 670 this morning and said the scouts he talked to believe Cease is a top of the rotation arm and could take the Kopech route through the system, making his MLB debut late next season. He also stated given his health since joining the WS the injury concerns were not as great.

signedepsteinsmother
7 years ago
Reply to  jacob2

I think there is something to be said for scouting the stat line. It certainly would be safer. But there are differing philosophies in play. An organization may put more weight on stats in the low minors. Until a prospect hits a level that it doesn’t play. All the while working on making it play. And the opportunity to refocus.
A prospect site may give a lower ranking to a lower minor stat line, until they can’t.
A perfect example, Cub fan sites (sites with knowledgeable fans who have followed the rebuild from the start) were up in arms over Niko Hohrner. Based solely on his ‘ranking’. Was it a good pick? I don’t know, because I don’t know.
None of us know.

Damaso
7 years ago

Agreed, Kiley. We’re better off scouting the stat line.

ThomServo
7 years ago
Reply to  Damaso

Agreed, the eye test isn’t a serious way to assess feel, command, or even changeup quality. Dinosaur approaches.

Manning is a stud. The eye-testers are missing breakout pitchers because the cannot observe and retain any seriously large samples of relevant data with their eye.

The traditional scouting style that Kiley and Eric use also relies heavily on word-of-mouth and basic industry surveys. The problem is that reputation lags performance substantially, and much of the industry simply relies on draft/J2 pedigree. Word-of-mouth, industry surveys, and nothing the super obvious tools is no serious way to project pitchers.

si.or.noMember since 2017
7 years ago

TL;DR; It would be helpful to see a distribution of potential FV outcomes

Two thoughts:

1. This might be a visualization/communication problem. I think that those closer to the prospect evaluation process have an innate understanding of how ranking incorporates risk and outcome variation, but there may be better ways to communicate it to us plebes.

How would you communicate that manning is _likely_ a FV 40 reliever, but has a small chance of improving his command and becoming a 55 FV starter? A density plot might convey this information better than a FV and a risk score.

2. The idea of “ranking” is itself a bit strange. As touched on in the trade value series, a prospects rank is subjective relative to the needs of the organization. Some organizations prefer low/high variance prospects. What is a correct ranking in this context? If it’s just FV, it would be helpful to see the distribution of potential FV outcomes.

ThomServo
7 years ago
Reply to  si.or.no

Eric/Kiley aren’t particularly competent empirically. You aren’t going to see a data-driven distribution of FV values, because such a distribution would be based on their whimsy. If it were empirically based, on the outcomes of their actual grades, the method would fall apart because their grades are not predictive at statistically significant levels.

So their attempts to distinguish a Manning from a Bieber, by grading one as stuff-over-command and the other as command-over-stuff, won’t have a statistically significant predictive effect. This isn’t real math they are doing, it’s Dave-Stewart-quality insight.

Kiley/Eric can’t remotely come close to providing a serious estimate with respect to Manning’s command. Their pitch value grades don’t have any predictive value- they frequently just scout velocity and fail to distinguish between good and poor breaking balls regularly. Even if they were right that Manning lacks ‘command’ as opposed to control (which is- again- an unserious assessment), they certainly wouldn’t be able to provide anything close to a fact-based estimate that Manning would improve his command so as to be a 55 FV SP as opposed to a 40 FV reliever.

As to a club’s subjective value- this doesn’t matter. Variance projections aren’t actually predictive- high performers tend to perform well, low performers tend to perform poorly: no one has produced a predictive ‘risk’ metric for prospect development apart from merely tracking good performance, age and injury.

As for other subjective club valuations, KC and Colorado can be as wrong as they like about what makes a good ballplayer- it doesn’t effect which pitchers are most likely to provide surplus value. Further, a ranking makes perfect sense- it is the only non arbitrary way to list the prospects. Only anti-data, bull**iters would say the ranking doesn’t mean anything, preferring a subjective ‘tiered’ or ‘categorical’ approach. Sure, the difference in estimated value between 12th and 13th might be small, but any methodology that actually tries to estimate value will provide unique estimates for nearly all pitchers- such that they can be ranked.

It’s unserious approaches like the ‘FV/eye test’ approach that lumps every pitching prospect into one of 7 bins (30, 35, 40, 45, 50, 55, or 60 for the most part), therefore having literally thousands of prospects indistinguished as ’40s.’ If you want distributions of FV values- don’t expect it to be done in a serious way- it’ll just be a normal curve slapped ontop of their ‘saw him once, asked some pals’ assessment.

senor_mike
7 years ago

Hey Kiley, I’m a huge fan of the work of both you and Eric.

On to your question….So first thought I have is that pitchers and positional prospects should reside in inherently different lists for specifically the reason you mention – the volatility in a pitching prospects gives them a far greater chance are landing in an extreme outcome of their projections, and that context is totally missing when you see a pitcher sitting at 35 on a list when he’s surrounded by positional players at 34 and 36.

If you followed such a model, it gives you the freedom to rate pitchers differently than hitting prospects. While I highly suspect you’d want to keep the 20-80 and CV/FV scales in place, you can introduce more variables into the equation that try to capture this question of stability/volatility for a given pitcher. Like a pitcher with an 80 stability is the closest thing to a sure bet to hit projections you’ve ever seen before, and you might stick a 34~45 on Manning/Cease/McKay, and so on.

While I admit this would be a pretty subjective measure, I think you could frame it pretty soundly as well. For example, you might try construct rating guidelines by analyzing past pitching prospects and weighting the risk factors they carried against the percentage of the time those risks played out (both positive like a deGrom, and negative like a Zach Lee).

Whether you’d try to build this into your FV score or have it exist along side of it I’m not sure of, I can see an argument for it either way.

Anyway, hope I gave you something to chew on!

johansantana17Member since 2026
7 years ago
Reply to  senor_mike

I totally agree. Even if they don’t separate hitters and pitchers into two separate lists, simply adding a “risk factor” or “stability” rating would be very helpful in helping readers better understand the prospects they read about.

ThomServo
7 years ago
Reply to  johansantana17

They already did add a risk factor and it’s laughable.

Willie Calhoun and Robles are rated as super safe, for example. Kiley/Eric don’t have any success estimating floor or ceiling, nor do they engage in the type of competent empiricism that would allow them to project variance,

They can and do, however, pull risk scores out of thin air (or by asking the lowest-common-denominator scouts in the industry)- with no serious math or data analysis. You can read their “risk evaluations” on the board.

goyo70
7 years ago

Thumbs up Logan Gilbert? Tall, athletic, command, throws 95 when he isn’t worn out and down with mono.

Powder Blues
7 years ago

The crux: “My instinct says that the stuff-over-command types make up a disproportionate amount of the washouts on these lists, but we continue to rank them highly so we don’t miss out on hailing the next ace as early as other lists”

And I completely agree. The fear of missing the next ace has led to a general overvaluation of hard throwers, who, besides the steep development hill they must climb to be effective in the majors, also are more likely to blow out their one prized advantage, velocity.

Good article.

JoserMember since 2021
7 years ago

I’m just curious how your evaluation and ranking of any of those three would change if they were lefties.

johansantana17Member since 2026
7 years ago
Reply to  Joser

McKay is a lefty

ThomServo
7 years ago

The Eric & Kiley lists have a really poor track record.

The anecdotal observations and whimsicle eye-test grades aren’t predictive, resulting in almost zero notable insights. The skeptism on manning and crease is based on flawed epistemology. The traditionalists can’t eye test command, feel, or separate the noise from the signal on mechanical matters.

The traditionalists can’t even eye test stuff. Top rated fastballs by scout grades regularly get hammered because eye testers are unable to pick up on the vast majority of relevant pitch info being unable to track how hard pitches are hit or what aggregate batting numbers each pitch yields. Eye testers can only pick up on the super obvious, noting speed and movement with some accuracy.

The semantic difference creates a false dichotomy between stuff and command (I.e. to the degree that both involve effective location), particular with offspead pitches. These dumb scouting concepts give rise to the excuses in this article: “we are missing the command guys because we don’t want to be embarrassed when a hard thrower comes good.” The premise is wrong- beiber has very good stuff, poorly observed by the eye testing traditionalists. It’s just poor concepts (stuff isnt just about throwing hard) and poor, conformist, industry-survey-style observations.

adlenon
7 years ago

As soon as I read the title, my mind went to pretty much every reds farm hand of the last five years