Say this for Jordan Walker: He knows how to put together a hitting streak. The 21-year-old rookie has only played in 39 major league games, and in that brief amount of time has recorded two streaks — a career-opening 12-gamer and now a 15-gamer — that together account for more than two-thirds of that run. His bat has suddenly become a bright spot in an otherwise frustrating season for the Cardinals.
Indeed, the reigning NL Central champions remain a hot mess despite winning five of their last seven games and salvaging a split in the London Series against the Cubs after being spanked 9–1 in the opener. The Cardinals have nonetheless been worse in June (7–13) than May (15–13), producing their lowest monthly rate of scoring runs (4.05 per game) along with their highest rate of runs allowed (4.88 per game), and falling from five games out of first place to 8.5 back. That’s hardly been Walker’s fault, though.
Recall that Walker, who ranked 12th on our 2023 Top 100 Prospects list, hit his way onto the roster in spring training, bypassing Triple-A Memphis, and opened the season as the regular right fielder, a situation that was somewhat surprising given the team’s apparent outfield depth. The move guaranteed that Tyler O’Neill, Dylan Carlson, and Lars Nootbaar would all get less playing time than expected — not the worst thing in the world given the subpar performances of the first two last year. The presence of fellow rookie Alec Burleson only added to the crunch. Yet Walker turned heads by collecting hits in each of his first 12 games, batting .319/.360/.489.
Once the hitting streak ended, however, Walker didn’t get a very long leash as the league adjusted. He went just 5-for-26 over his next eight games, four of which featured multiple strikeouts. Meanwhile, his poor jumps and bad throwing decisions served to remind that he was still a work in progress on defense as well; a converted third baseman, he had just 51 previous professional games in the outfield, including in last year’s Arizona Fall League. Still, it felt odd when, on April 26, the Cardinals optioned him to Memphis, with club president John Mozeliak deciding that the outfield of the 9–15 team was suddenly too crowded. “[G]uys just aren’t getting into rhythm, [with their] expected playing time,” he told reporters, adding that he and manager Oli Marmol envisioned less playing time for the rookie in the near future and figured it made little sense for him to idle on the bench. More understandable was the team’s desire for Walker to work on his approach and hit the ball in the air more often to take advantage of his 70-grade raw power. Read the rest of this entry »
Roch Cholowsky is one of the top high school shortstop prospects in the 2023 draft class, and one of the few potential first-rounders to do the full battery of drills at last week’s MLB Draft Combine. Attending the combine was unusually convenient for Cholowsky, who went to high school in Chandler, Arizona, less than half an hour from Chase Field.
It’s a very, very good place for a young ballplayer to grow up. In the suburbs east of Phoenix you’ll find six teams’ spring training complexes, plus Arizona State. This part of the world has no shortage of high-quality baseball infrastructure, and is crawling with scouts on the lookout for the next Gold Glove shortstop.
Isaac Coffey is rapidly emerging as a prospect to watch in the Red Sox system. Drafted in the 10th round last summer out of Oral Roberts University, the 23-year-old right-hander logged a 2.83 ERA with 86 strikeouts in 60.1 innings at High-A Greenville before being promoted to Double-A Portland a week ago. His profile is unique. Our lead prospect analyst Eric Longenhagen has described Coffey as having “a funky, drop-and-drive, low-slot delivery (but his arm action is super short, not typical of low-slot guys) that creates big lateral divergence between his fastball and slider.”
Coffey discussed his four-pitch arsenal and his atypical arm slot prior to a recent game at Portland’s Hadlock Field.
———
David Laurila: Let’s start with the self scouting report. What is your arsenal?
Isaac Coffey: “I’ve got a four-seam fastball. A lot of people think it’s a sinker or a two-seam, but with the release height and my slot — I spin it between 2:15 and 2:30 on a clock, with 100% spin efficiency — it tends to look like it’s rising, even though it has more run than ride. It plays up in the zone because it’s coming from that lower slot. It averages around 89 [mph], topping out at 91, but my command of it is pretty good. I can place it on both sides of the plate and use it whenever I need to.
“My changeup is a four-seam, basically a circle change. I spin it really good, and it’s got 100% spin efficiency, too. I spin it at like three o’clock to 3:15, and that creates a lot of run. It’s basically straight sideways but sometimes with a little negative drop. It’s always been my best off-speed pitch.
“I also have a slider and a cutter, both of which I developed this offseason. The cutter is just an offset four-seam that I try to throw hard. It gets a little bit of arm-side run, but compared to the fastball… it probably has perceived cut, but not actual cut on the Trackman numbers. I’m getting more comfortable with that and have been using it more and more each outing.
“My slider is also getting better as the season goes on. It’s got that nine o’clock sideways spin. The command is getting a lot better, so I believe I can use it in a lot of counts right now.” Read the rest of this entry »
If you’re like me, this year’s bumper crop of pitching prospect debuts has overwhelmed you. I write about baseball for a living, and it still gets to be too much for me sometimes. Mason Miller, Bryce Miller, Taj Bradley, Bobby Miller, Grayson Rodriguez, Andrew Abbott, Michael Grove… you could almost make an entire starting rotation just out of Millers. Some of these debuts have been spectacular. Some have been lackluster. Some are works in progress. It’s hard to tell what’s real and what’s hype.
That leads me to Eury Pérez, our top pitching prospect and perhaps the most anticipated debut of the year. It’s easy to equate all debuts, or at least to think of them as quite similar until a pitcher does something to set himself apart. Don’t fall for that trap, though. I’m here to tell you: Pérez is amazing, and it’s time to start paying attention to him if you’ve been missing out.
One thing is almost universally true about the heralded pitching debuts this year: these guys have stuff coming out their ears. I don’t mean that in an ‘ew gross earwax’ way, either: they’re tooled up like you wouldn’t believe. I think that’s just the way the world works now. Teams are better than ever before at applying objective measurements to individual pitches. In the past, a guy toiling in Hi-A with so-so numbers wasn’t going to the bigs regardless of how much vertical break he imparted. Now, if you’re throwing a fastball that looks at home in the majors, your team knows right away. Read the rest of this entry »
Below is an analysis of the prospects in the farm system of the Colorado Rockies. Scouting reports were compiled with information provided by industry sources as well as my own observations. This is the third year we’re delineating between two anticipated relief roles, the abbreviations for which you’ll see in the “position” column below: MIRP for multi-inning relief pitchers, and SIRP for single-inning relief pitchers. The ETAs listed generally correspond to the year a player has to be added to the 40-man roster to avoid being made eligible for the Rule 5 draft. Manual adjustments are made where they seem appropriate, but I use that as a rule of thumb.
A quick overview of what FV (Future Value) means can be found here. A much deeper overview can be found here.
All of the ranked prospects below also appear on The Board, a resource the site offers featuring sortable scouting information for every organization. It has more details (and updated TrackMan data from various sources) than this article and integrates every team’s list so readers can compare prospects across farm systems. It can be found here. Read the rest of this entry »
The Angels did some bargain shopping over the weekend, adding veteran infielders Eduardo Escobar and Mike Moustakas to the roster from the Mets and Rockies, respectively. Escobar, who has triple-slashed a .254/.305/.432 line this year and was a part-timer in New York after the team turned to rookie Brett Baty as the starter at third base, was acquired for two pitching prospects, Coleman Crow and Landon Marceaux. Moustakas has performed adequately as a role player for the Rockies this year, splitting time between first and third and pinch-hitting, and fetched minor league pitcher Connor Van Scoyoc in return.
Assuming the Angels aren’t simply quickly acquiring third basemen from 2018 as part of some mad scavenger hunt, the urgency here reflects their desperate need for infielders. In most seasons, the preseason plan to have Mike Trout and Shohei Ohtani and precisely nothing else go wrong with the other 24 players has gang aft a-gley by this point of the season, like most of the best laid plans of mice and men, despite Disney selling the Angels to Arte Moreno 20 years ago. Nobody writes a paean to a team with a .537 winning percentage, but this ordinary level of respectability, if the first half ended today, would represent the franchise’s best first-half winning percentage since the 2015 season. At 42–37, Los Angeheim stands just a game out for the last wild card spot, so now is pretty important.
“Now” is also a bit of a problem when it comes to the roster. While this may be the season the Angels finally write the proof to the hypothesis “.500 Team Plus Shohei Ohtani and Mike Trout = Playoffs,” parts of the roster have crumbled in recent weeks. And while the lineup has scored 5.3 runs per game in June, more than 20% of that total came in Saturday night’s 25–1 humiliation of the Rockies; the Angels are at a decidedly meh 4.4 runs per game in recent weeks otherwise. The infield increasingly looks like a rickety structure that could collapse with a firm gust of wind. Jared Walsh, who looked in 2021 as if he could hold down the fort at his peak for three or four years, struggled in 2022 with thoracic outlet syndrome, and his return this year was poor enough that he was sent down to Triple-A Salt Lake. Read the rest of this entry »
Whether there is a luddite rebellion, a scouting counter-revolution, or some other attempt at rolling back the technological advances the game has seen in recent years, last week I detailed why it makes sense for pitchers to adjust to new technology right now. Sure, hurlers could wait for a tech nullification or, in its absence, a new kind of tech to level the playing field, but as things stand, the scales are tipping.
Throughout the pitch-tracking era, hurlers have stood to benefit more than hitters from analytics thanks to highly customizable pitching plans. In recent years, motion-capture systems have helped optimize pitchers’ mechanics in addition to their repertoires. But this year, a significant number of teams have unearthed another use of limb-tracking software: in-game pitch tipping. Essentially, machine learning identifies subtle differences in muscle activation in real-time, typically due to different grips across pitch types, while the pitcher is still holding the ball in his glove. After a quick relay system, that information reaches the field, and the batter can then look to the dugout or a base coach for some indication of what’s coming.
To counteract this, I suggested pitchers mix up their wrist action and finger pressure right before release; by the time the KinaTrax systems pick up what’s going on, it’ll be too late. Sadly, I don’t have access to metrics like breadth of wrist action and finger pressure relative to grip, so I decided to come up with my own way of identifying pitchers who are already doing what I would recommend. I theorized that spin axis could be a proxy for grip, since the point about which a thrown baseball spins is heavily reliant on how the pitcher holds it. The direction and magnitude of movement is also closely related to spin axis, but there isn’t a one-to-one correspondence, so I hypothesized that pitchers with wide variability in movement despite minimal spin axis variability could be adding some extra mustard after separation. Read the rest of this entry »
If not as momentous as the rediscovery of the coelacanth after a 65-million-year absence, the return of the knuckleball to Major League Baseball was still an occasion worth noting. On Saturday, the Padres recalled Matt Waldron to make a spot start, and the 26-year-old righty became the first pitcher to throw a knuckleball in a regular season game since the Orioles’ Mickey Jannis in 2021.
Waldron threw only 13 knucklers from among his 62 pitches, mixing the fluttering pitch into a more standard arsenal, but he got good results with the offering. All told, he performed respectably, allowing just two runs — both via solo homers off his four-seam fastball — in 4.2 innings to the Nationals. Unfortunately, the Padres didn’t score at all, and fell 2–0.
Where the knuckleball generally had at least one or two standard-bearers with secure spots in the majors at any time from the mid-1960s up through 2017, the pitch has become an endangered species in recent years, as I’ve noted a few times in this space. Brothers Phil Niekro (who pitched in the majors from 1964 to ’87) and Joe Niekro (1967–88), Wilbur Wood (1961–78), and reliever Hoyt Wilhelm (1952–72) all thrived with the pitch (some for longer than others), with the elder Niekro and Wilhelm both making the Hall of Fame. Charlie Hough (1970–94), Tom Candiotti (1983–99), and Tim Wakefield (1992–93, ’95–2011) became staples of the rotation if not stars, and Steve Sparks (1995–96, ’98–2004) and Dennis Springer (1995–2002) found sporadic success. R.A. Dickey took the baton from Wakefield and gave the knuckleball its last burst of prominence. He turned to the pitch in 2008 after finding little success during his sporadic appearances in the majors from ’01 to ’06, finally solidified a spot in the majors in 2010, and two years later became the first knuckleballer to win a Cy Young Award; that year, he was the only true pitcher to throw a single knuckleball in the majors according to either PITCHf/x or Pitch Info.
Dickey lasted until 2017, when he was 42 years old, but aside from him, every knuckleballer who came and went more or less hung around on the major league margins. Steven Wright, who debuted for the Red Sox in 2013, spent parts of seven seasons in the majors, but a knee injury and a suspension for domestic violence limited him to 60 innings in 2018–19, the first years of the post-Dickey era. Since then, the pitch has become the province of position players pressed into mop-up duty, with Ryan Feierabend (2019 with the Blue Jays) and Jannis the only true pitchers to try it at the major league level. That they combined for just three appearances, allowing 14 runs in nine innings, only underscored the pitch’s decline in popularity.
Hence the interest in Waldron, whom Cleveland drafted out of the University of Nebraska in the 18th round in 2019, then sent to San Diego as the player to be named later in the Mike Clevinger blockbuster in November 2020. Waldron taught himself a knuckleball way back in Little League, figuring it out with twin brother Mike, who had this to say about it when interviewed on MLB’s broadcast:
“[It started] just out of curiosity… It was one of those things that you’re like, ‘Hey, that’s pretty cool. We’ll go ahead and see what we can do, throw it around.’
“It kind of became one of those fun pitches we’d throw around when we were at practice or something, just something to mess around with. To see it work at this level … it’s unbelievable, really.”
Waldron turned some heads in Padres camp throwing the knuckleball in warm-ups in 2021, and so the team encouraged him to feature the pitch, which sat in the low 80s and contrasted well with his 92–94 mph fastball, slider, and changeup. Exactly how much he threw it is unclear, but according to Baseball America, “As Waldron got more comfortable with the pitch, he pushed its usage over 70%.” He pitched to a 4.25 ERA, walking 35 and striking out 103, in 103.2 innings split between High-A Fort Wayne and Double-A San Antonio.
Unfortunately minor league pitch usage data for Waldron isn’t easy to come by, as the pitch is so rare that auto-tagging systems usually label it as a slider or changeup; check out his spin rates for the pitch, and occasionally you’d see one that’s 2,900 RPM or so instead of sitting in the 100–400 range, where he was in his most recent start for Triple-A El Paso on June 16. According to Synergy Sports, which manually tags each pitch, Waldron threw knuckleballs just 9% of the time last year while getting smoked for a 6.26 ERA in 113.2 innings split between San Antonio and El Paso. He walked 39 and struck out 96 but served up 14 homers, including 12 in just 69.1 innings for El Paso. This year, he was up to 22% in his knuckleball usage; based on various reports and his own comments, he was throwing it more often to lefties than righties. “I use it coming out that same tunnel [as the fastball],” he told reporters.
For as sound as his plan may be, Waldron had been rocked for a 7.02 ERA, 5.34 FIP and 11 homers in 66.2 innings when the call came. Those numbers obviously aren’t impressive, but it’s worth remembering that altitude is a significant factor in the Pacific Coast League. The Chihuahuas’ Southwest University Park sits 3,750 feet above sea level; the circuit also includes high-altitude parks in Albuquerque (5,100 feet), Reno (4,500 feet), Salt Lake City (4,230 feet), and Las Vegas (3,000 feet). Not only do batted balls carry further at such altitudes than at sea level, but knuckleballs also move less. Dickey never pitched at Coors Field (and only faced the Rockies twice) but did throw bullpens there and pitched against Triple-A Colorado Springs during his minor league years. In 2012, he explained the hazards of the knuckleball at altitude to sportswriter Dave Krieger:
“It is tougher to throw at those high altitudes because there’s not much humidity for the ball to kind of resist against. At sea level… if I throw a mediocre knuckleball, well, it’s still going to move, it just might not move as sharply or as much. If I throw a mediocre knuckleball in Colorado, it’s going to be a b.p. (batting practice) fastball right down the middle that I’m going to have to either dodge or I’m going to just put my glove up for the umpire to throw me another ball because that one just went 450 feet.
Thus the conditions make it tough to take Waldron’s numbers at face value, which the Padres surely understand when they turned to him for a spot start in place of Michael Wacha; he’s been the team’s best pitcher this year, with a 2.90 ERA and 3.78 FIP, but has also been notoriously fragile throughout his career and is currently dealing with a bout of shoulder fatigue. Waldron’s stay wasn’t expected to be a long one — and in fact, he was optioned back to El Paso on Sunday — but his outing did open some eyes.
Facing the Nationals, who rank 12th in the NL in both scoring (4.13 runs per game) and wRC+ (93), Waldron got ahead of leadoff hitter Lane Thomas using his four-seam fastball, then unveiled the knuckleball on a 1–2 pitch that Thomas fouled off; as it turned out, Thomas would be the only righty-swinger to see any of Waldron’s knucklers. Two pitches later, Waldron struck out Thomas swinging at a 93.8 mph four-seamer right down the middle. After getting Luis Garcia on a first-pitch grounder, he got ahead of switch-hitting Jeimer Candelario (who batted lefty) 0–1, then threw another knuckler, this one too low. Candelario took it for a ball, then crushed a 92.9-mph middle-middle fastball for a towering 395-foot solo homer, 107 mph off the bat, the hardest-hit ball Waldron would allow all evening. Here’s a look at the two knucklers, contrasted with the two payoff pitches:
Ouch. After the homer, Waldron recovered to strike out Joey Meneses to end the inning, using three four-seamers as well as a cutter and a slider, both of which were way outside the strike zone. He kept the knuckleball on ice until the fourth inning, after working around a leadoff single by Corey Dickerson (a lefty) in the second and serving up a solo homer to Thomas on a 92.4-mph first-pitch fastball in the third; he also issued a one-out walk to Garcia but stranded him.
In the fourth, Waldron threw back-to-back knuckleballs to Dickerson, who had fallen behind 0–1; he fouled off both, took a fastball for a ball, then grounded to shortstop on yet another knuckler. Waldron went back to the pitch for three out of the four offerings to the next batter, switch-hitter Keibert Ruiz (batting lefty), who finally grounded one to second base. Here are the floaters from that two-hitter sequence:
While it would have figured that Waldron might throw a knuckleball to lefty Dominic Smith, he didn’t need to, as Smith grounded out on an 0–2 fastball. In the fifth, righty Derek Hill grounded to short on a fastball after laying off two cutters well outside the zone. Lefty CJ Abrams, on the other hand, saw nothing but knuckleballs, flying out to right field on the fourth one.
That swinging strike had 20 inches of horizontal movement, Waldron’s highest measure of the game and one of four in double digits. Here’s a slow-motion view:
Thomas took Waldron’s final knuckler for ball one before singling off a slider, at which point manager Bob Melvin pulled the rookie in favor of veteran lefty Tim Hill, who struck out Garcia. The Padres bullpen didn’t allow another run, but the lineup couldn’t muster any kind of heat, managing just four hits, all singles, and failing to take advantage of an additional four walks against starter Josiah Gray. The Nationals bullpen retired all 11 batters it faced, six by strikeouts.
All told, Waldron threw 27 four-seamers, 14 sliders, seven cutters and a sinker to go with his 13 knuckleballs. He got five whiffs and 10 called strikes with the four-seamer, which averaged 92.3 mph and topped out at 94.4. He got just one whiff out of seven swings via the knuckler, whose velocity ranged from 76.3 mph to 84.2 mph, as well as two called strikes; he had a 23% CSW for that pitch, compared to 37% for the fastball and 29% overall. Batters did chase three of the eight floaters he threw outside the strike zone (37.5%, and it’s worth noting that none of them escaped the reach of catcher Gary Sánchez, who was handling the pitch for the first time), but they also made contact with all five in the zone, though the only ones they put into play were the outs of Dickerson, Ruiz, and Abrams. Those three had an average exit velocity of 89.7 mph, an xBA of .137, an xSLG of .160, and an xwOBA of .125, though his overall marks — 92.2 mph exit velo, .294 xBA, .574 xSLG, .383 xwOBA — obviously weren’t as good. As his 50% hard-hit rate and 6.35 xERA attests, Waldron needs to do a better job of limiting hard contact if he’s to survive.
As for the knuckleball itself, the total of 13 that he threw on Saturday was fewer than those of seven position players who have broken it out for their mound cameos during the pitch-tracking era (2008 onward), not to mention all nine of the other pitchers who did so. Excluding the bastard sons of Wade Boggs, here’s how they stack up:
Waldron’s knuckler rates as the fastest in terms of average velocity, faster even than Dickey’s “angry knuckleball.” It’s mid-pack in terms of vertical movement, but tops in terms of horizontal movement. Unfortunately, I don’t have much in the way of direct comparisons for spin rate, since it wasn’t until Statcast switched to the Hawkeye cameras in 2020 that spin could be measured directly; Waldron’s knucklers averaged 295 RPM, which is lower than Jannis’ average of 407 but about double the ideal of 150, which translates into about one to one and half rotations from the mound to the plate. Neither Stuff+ nor PitchingBot even scored Waldron’s knuckleball, though both models really liked his slider (whose usage rate matches up with Gameday, which is to say the pitches aren’t being conflated), and PitchingBot found his other pitches to be at least average, though it didn’t score the cutter. Stuff+ saw his other pitches as pedestrian, which I believe better matches up with the general scouting perception. Small-sample caveats abound:
Matt Waldron Pitch Breakdown
Model
FA
SI
FC
SL
KN
Stuff+
Location+
Pitching+
Gameday (# pitch)
27
1
7
14
13
n/a
n/a
n/a
Stuff+
81
30
84
109
n/a
89
99
106
Model
FA
SI
FC
SL
botStf
botCmd
botOvr
PitchingBot
54
80
n/a
64
n/a
49
63
61
Stuff+ scores normalize to 100 equaling major league average, PitchingBot scores use 20–80 scouting scale with 50 equaling average. Neither model scored Waldron’s knuckleball.
All told, I think it’s fair to say that Waldron demonstrated some promise with the way he used the knuckleball to keep hitters off balance, but that unless he can hone his arsenal and find a way to miss more bats, he’s likely destined to remain on the fringe of the majors rather than securing a regular job. I would absolutely love to be wrong about that, because even in his one-night cameo, Waldron’s knuckleball was a most welcome sight.
Jay Jaffe: Good afternoon, folks! I’m back from my annual foray to Cape Cod and at my usual battle station for the Tuesday chat.
