This is the year of the splitter. In 2024, 3.1% of all big league pitches thrown have been splitters compared to 2.2% in 2023, a year-over-year increase of 41%. Aficionados of the split-fingered fastball include former NPB stars like Yoshinobu Yamamoto and Shota Imanaga, longtime MLB users like Joe Ryan and Fernando Cruz, and an assorted collection of hurlers who’ve added a new splitter or featured one much more prominently in their arsenal this year. And few starters have scaled up their splitter usage more than the man atop the pitcher WAR leaderboard: Tanner Houck.

Houck has thrown a splitter his entire time in the majors, but he’s taken it to a new level this year by doubling its usage. Among qualified starters, Houck throws the sixth-highest percentage of splitters, while his splitter’s 110 Pitching+ ranks fifth, ahead of Ryan and Imanaga. The rise of Houck’s splitter, combined with the arsenal tweaks he’s made to throw it more, have transformed him from a mixed-role swingman to slam-dunk frontline starter.

Houck has spent most of his big league career straddling the line between starter and reliever. He pitched mainly as a starter during his 2021 rookie season, but never completed the sixth inning in any of his starts. His sophomore campaign saw him make multi-inning appearances out of the bullpen. Back in the rotation last year, he posted an ERA above five and struggled to get outs as his pitches lost their bite later in starts.

Aside from stamina, Houck’s delivery served as a hurdle to his abilities as a starter. While a handful of starters fire from low arm slots, Houck is one of the only true sidearmers currently in a big league rotation. He doesn’t have an outlier release point thanks to his tall stature and mechanics that carry him toward the first base side, but his arm angle is certainly the lowest among starters. Houck’s delivery provides a great viewing angle for left-handed hitters, who comprise the majority of his competition as opponents stack platoon bats against him.

In 2023, lefties slashed .271/.356/.502 against Houck, roughly the equivalent of having to face Rafael Devers for the entire season. But through his first 10 starts of this year, he’s held them to a line so poor I can’t find a qualified hitter whose numbers I can compare with it. Neutralizing the platoon advantage is a huge deal for a pitcher with his arm angle, and much of this impressive feat has to do with his splitter.

Let’s take a look at what Houck’s approach to pitching looked like before ramping up the use of his splitter. Like most low-slot pitchers, his two primary offerings are a sinker and slider, taking advantage of the east-west movement his arm action produces. Both these pitches are chart-topping in terms of movement, dropping more than average due to their lack of backspin, and his slider breaks to the left even more than most sweepers (though Statcast doesn’t classify it as one).

While these two pitches made right-handed hitters absolutely futile against Houck, sinkers and sweeping sliders tend to generate large platoon splits, compounding with the advantage lefties gain from seeing the ball clearly out of his hand. Houck’s slider drops so much that lefties can’t do much with it, but his sinker moves directly into the path of their barrels, eager to get hammered. In the past, Houck primarily used four-seamers and cutters as his hard offerings against lefty opponents, hoping the rising action would be enough to miss bats. But these pitches still had too much arm-side movement and didn’t generate upward Magnus force, instead staying on plane with lefty swings.

Houck’s approach to lefties wasn’t working, and he needed a change. In came the splitter. What was once a distant fourth offering became his offspeed weapon. He tinkered with its shape, adding nearly four inches of drop to make it more distinct from his sinker. He tightened up its command, finishing down in the zone more consistently and spiking fewer in the dirt. The end result of these adjustments is a lethal pitch that has been a key contributor to Houck’s success.

Houck’s splitter leads his arsenal in both swinging strike rate and putaway rate, indicating it’s already his go-to weapon in two-strike counts. And while it’s been successful at missing bats, the results it generates when batters put it in play may be even more impressive. His split has the lowest launch angle allowed of any individual pitch from a starter; it’s one of just a dozen with a negative average launch angle. After years of allowing lefties to crush the ball in the air, he’s inducing a higher groundball rate against lefties than righties in 2024. These underlying changes have manifested in big time results – lefties have just a .038 ISO against Houck this season and have yet to homer, and Statcast metrics like barrel rate confirm this is no fluke.

The emergence of Houck’s splitter has also cut down his walk rate significantly, as he’s jumped from the 42nd to the 88th percentile in avoiding free passes. Previously, Houck often nibbled around the zone against lefties, afraid of what they could do to his fastball and cutter. Now armed with a pitch that limits damage, he’s fearlessly attacking the strike zone, improving his splitter zone rate by 14 percentage points and his overall zone rate by nearly five.

The effectiveness of his splitter has also made Houck’s sinker a more effective strike stealer because hitters watch it go by expecting it to drop beneath the zone. Houck currently ranks second to Seth Lugo in called strike rate, getting ahead of hitters before disposing of them with the slider and splitter. His improved control of the count is a big reason why he ranks fourth in K-BB% increase relative to 2023.

What impresses me most about Houck’s splitter is the sheer frequency with which he deploys it against lefties, especially at the expense of his fastballs. He’s throwing significantly fewer cutters and has shelved the four-seamer entirely. After unsuccessfully throwing the kitchen sink against opposite-handed opponents, he’s essentially become a two-pitch pitcher against lefties, throwing either a slider or splitter nearly three-quarters of the time.

It’s not often that you see a pitcher use two different non-fastballs as their primary offerings, but this strategy has paid off – not just for Houck but also for the Red Sox as a whole. Last month, Chris Gilligan wrote about Boston’s staff leading the leaguewide shift away from the fastball, pointing out Houck’s four-seamer had a horizontal movement profile ripe for hitters to feast on. Just a couple decades ago, a starting pitcher who almost exclusively relied on sliders and splitters against left-handed hitters would have been unthinkable, but the secondaries-first approach is now a strategy that entire teams are embracing with tremendous results.

Houck’s run as the top-performing pitcher in the majors probably won’t last — he has an unsustainably low 2.6% HR/FB rate — but the excellence of his splitter has certainly put a massive up arrow on his future projection. Just a couple years ago, it would’ve been difficult to envision that the sidewinding swingman who couldn’t handle lefties would become an excellent starter who consistently works into the seventh inning. But with a surprisingly simple fix, Houck has made it happen.

As I write this before the start of play on May 23, we’re just about a third of the way through the season, and I don’t think we can avoid it anymore. Jurickson Profar is batting .339 with a 178 wRC+. Jurickson Profar ranks 10th in baseball with 2.2 WAR. Jurickson Profar, who signed a one-year, $1 million contract on February 24. Jurickson Profar, who until this season averaged 0.8 WAR per 162 games over 10 seasons, and last season put up -1.7 WAR, making him literally the least valuable player in baseball. Jurickson Profar leads all qualified National League players in on-base percentage (.431) and ranks in the top 10 in batting average, slugging percentage (.517), RBI (32), and strikeout rate (13.7%). Jurickson Profar.

(I say qualified because LaMonte Wade Jr. and his .481 OBP did not have enough plate appearances to be among the league leaders. Naturally, between the time I wrote this post and now, Wade crossed the qualification threshold, so Profar now ranks second.)

Here’s something I wrote a couple months ago:

“I imagine that everybody here at FanGraphs generates ideas for articles in different ways. Looking at leaderboards is certainly a common method. You click around, sorting by different stats until someone looks out of place. ‘How did you get all the way up here?’ is what the start of a FanGraphs article sounds like.”

Well, here we are. How the name of Bip Roberts did Jurickson Profar get all the way up here?

I honestly don’t know what the Padres were expecting when they brought Profar back, but this couldn’t have been it. Let’s quickly establish just how out of character this run has been. Not only has Profar never had a 52-game stretch like this, he’s never come close. He’s running a .949 OPS. Before this season, his best 52-game span in a single season came in 2018, when he ran an .882 OPS. That’s a 67-point difference. Profar is batting .339, but until this season he’d never once had a span this long where he hit above .300. Here’s his 52-game rolling wRC+ for his entire career. His previous high came on August 2, 2022. It was 31 points lower.

Right off the bat, this graph tells us that after a horrible 2023 season, Profar was due for some regression of the good kind. He came into this season with a career wRC+ of 92, and that figure is 97 if we limit it to his last six seasons. The smart bet was that he was going to bounce back at least part of the way from last year’s 76 wRC+ clunker.

There’s also another obvious gimme: Luck. Profar has never finished a season with a BABIP above .300, but he’s currently at .371, tied for fourth highest in baseball. His .416 wOBA is 38 points above his .378 xwOBA, a differential that puts him in the top 10 percent of all batters. The 2.3-homer difference between Profar’s 4.7 expected home runs and 7 actual home runs is the seventh-largest gap in baseball. Profar’s line drive rate, which had never risen above 27.7% in a season, is currently at 32%. It’s fantastic that Profar is squaring the ball up so much, but line drive rate is also notoriously fickle. We can and should expect all of these numbers to come back down.

Profar is running career bests in both walk rate, 13.2%, and strikeout rate, 13.7%. In order to get a handle on how that has come about, I compared his plate discipline numbers from this year to his average the four previous seasons.

As you can see, he’s seeing fewer strikes, and he’s being a bit more aggressive, especially in the zone. He’s also making more contact inside the zone, but not outside the zone. That last part is unsustainable. People don’t usually get better at making contact specifically on the pitches that they want to hit anyway. When it does correct itself, it will result in lower walk and strikeout rates, and more weakly hit balls in play. Still, the numbers aren’t shouting anything particularly clear. According to Statcast, Profar’s swing/take decisions have been worth 21 runs, just the second time in his career that it’s been a positive number. That’s the fifth-highest mark in baseball, and it slots him right between Mookie Betts and Juan Soto. However, according to SEAGER, Profar’s swing decisions put him in the 19th percentile. Right now, I just want to see a bigger sample size.

Profar has always been good at making contact, but so far this season, he’s doing so while hitting the ball harder. This is where things get real. Even though it’s propped up by a line drive rate that’s too good to be true, a .378 xwOBA is a huge jump for Profar, whose career best of .338 came during the short 2020 season, when he put up a 113 wRC+. The switch-hitting Profar is also succeeding from both sides of the plate, running a 181 wRC+ as a lefty and a 172 wRC+ as a righty.

This season, Profar’s average exit velocity is a career-high 90.4 mph. More importantly, he’s seen a big jump in his 90th percentile exit velocity, going from 101.8 mph in both 2022 and 2023 to 104.5 this season. That moved him from the 25th percentile to the 58th. His 40.8% hard-hit rate is not just a career best, but it’s the first time he’s ever touched the 50th percentile. None of this is enough to make him a power hitter or make a .517 slugging percentage sustainable, but it is a serious jump, and those kinds of numbers are hard to fake. Moreover, they’re coming after some changes to Profar’s swing. From the left side of the plate, Profar has changed up his stance significantly, starting out much more open, with a bigger bat waggle at a steeper angle. From both sides of the plate, he’s gone from almost no leg kick whatsoever last year to bringing his foot several inches off the ground this year.

Adding a leg kick is a common way for a player to try to increase power, and it certainly seems to be working for Profar so far. According to Statcast’s new bat tracking metrics, Profar is slightly above average in terms of squaring the ball up and slightly below average in terms of bat speed. There’s no way to know where he ranked in previous seasons, but based on all of this, I don’t think it would be crazy to give him the benefit of the doubt and expect some of this new exit velocity to stick.

There’s one last thing I’d like to consider. It’s possible that Profar is just very happy to be home, or that he happens to see the ball particularly well in San Diego. Profar has a career 123 wRC+ in Petco Park. Over his time with the Padres from 2020 to 2023 (excluding his time with Colorado in 2023), he’s run a 113 wRC+ at home, compared to 96 on the road. Even this season, he’s at 212 at home, compared to a (somehow) relatively pedestrian 149 on the road. I wouldn’t put a ton of stock in that theory, but there’s a possibility that Profar just feels comfortable at Petco.

So where does all of this leave us? It definitely doesn’t leave us thinking that Profar is now a true-talent .300/.400/.500 hitter. He’s due for some regression in terms of BABIP, in terms of line drive rate, and in terms of contact rate outside the zone. On the other hand, it does seem like he might have found a way to hit for a bit more power without sacrificing much in the way of contact ability. We’ll have to wait and see where exactly that leaves him.

Below is an analysis of the prospects in the farm system of the New York Mets. Scouting reports were compiled with information provided by industry sources as well as my own observations. This is the fourth 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 we 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 »

Over the weekend, I was distraught to learn that Mike Baumann — my lovely, mild-mannered, Suits-loving, pineapple-curious distant cousin — had been designated for assignment by the Baltimore Orioles. Those no-good, rotten, perfidious, cold-hearted Baltimore Orioles. Did you know that Big Mike and Austin Hays had been teammates dating back to college? All those years, lost like tears in the rain.

To say I’m furious would be an understatement of biblical proportions, and the Mike Baumanns of the world are coming together to visit disproportionate vengeance upon the Orioles. I’ve already jinxed John Means, and I’ll take another pitcher every week until our thirst for retribution is sated. Which will probably be never. Francis Scott Key was a hack. The Wire is overrated. Neither I nor my descendants will ever eat crab again. Read the rest of this entry »

Welcome to another edition of Five Things I Liked (Or Didn’t Like) This Week. By now, you surely know the drill. I credit basketball genius Zach Lowe for creating the format I’m using, make a few jokes about how much baseball I get to watch to write this column, and then give you a preview of what you can read about below. This week’s no exception! I get to watch a ton of baseball, and this week I watched a lot of birds and a lot of bunts. I also watched a lot of the Pirates, just like I do every week. Let’s get right into it.

1. Reversals of Reversals of Fortune

For most of the 21st century, no one would bat an eye if you told them the Cardinals swept the Orioles. The Cards have been good pretty much forever, and the O’s went through a long dry period. But starting last year, things have changed. The Orioles last got swept in early 2022, and they’ve been one of the best teams in baseball since then. The Cardinals fell on tough times after 2022’s Molina/Pujols swan song season. Coming into their series this week, the O’s had the second-best record in the AL, while the Cardinals languished near the bottom of the NL at 20-26.
Read the rest of this entry »

Welcome back to Top of the Order, where every Tuesday and Friday I’ll be starting your baseball day with some news, notes, and thoughts about the game we love.

The Blue Jays haven’t yet crashed into a windowpane, never to recover, but 23-26 certainly isn’t what was expected of them entering the season. Before the season, our playoff odds gave them 49% chance to make the postseason. Toronto’s odds peaked at 57.9% on April 22, but since then, the team has fallen off. As of this morning, the Blue Jays have a 24.0% probability to make the playoffs. That leaves them with some serious decisions to make over the next two or so months before the July 30 deadline. Considering their current situation, let’s take a look at their options if they choose not to bolster their big league roster by the end of July.

Stand Pat

This is the most straightforward option: Don’t do anything and hope for some improvements. Every hitter other than Daulton Varsho, Davis Schneider, and Danny Jansen has underperformed this year, and maybe the Blue Jays can stay in the hunt long enough for their bats to catch fire. The organization may determine this is its best option simply because their players probably would have less trade value while they are playing below expectations. If the return package isn’t what the Blue Jays want, why not stay they course?

Only Sell The Rentals

The Blue Jays have a whole bunch of free agents after the 2025 season. And while they could decide to trade those guys (more on this later), Mark Shapiro and Ross Atkins may find it best to hold on to them and go for one last run next season. But that doesn’t take the Blue Jays out of the action at the deadline; they have several enticing players on expiring contracts to dangle to contenders.

Justin Turner has slumped horribly recently — entering last night’s game, his wRC+ in May was -21, after 152 in March/April, bringing his seasonal wRC+ down to 96 — but if he can rebound to being solidly above average, contenders would be happy to acquire his righty bat and postseason experience. The Twins, Rangers, and Rays all have gotten wRC+ values below 80 from their designated hitters, and Turner can also fill in at third base, second base, and first.

Yimi García has been one of baseball’s best relievers this season, allowing just one run in 19 innings. He’s also struck out 35% of opponents, and his xERA (1.44) and FIP (2.24) both back up his solid performance. He would make any contender’s bullpen better, and he’s always bounced around between roles, so he doesn’t have to be pigeonholed into a particular inning or situation. It is worth noting that García has never been this good before, and as Ben Clemens wrote in his column yesterday, “you can’t trade your newfound reliever for a shiny prospect,” so it’s unlikely that García alone would net the Blue Jays a strong return package. That said, if Toronto is out of the race, it might as well get something for a 33-year-old reliever who might not be with the team next year anyway.

Lefty Yusei Kikuchi is rather quietly pitching the best he ever has in the majors, with a 2.64 ERA across 10 starts and a career-low walk rate of 5.5%. Teams always need starting pitching, and his above-average rate of inducing grounders and popups will play anywhere.

Rounding out this group is Jansen, who on a rate basis has hit better than any other catcher in baseball, with a 191 wRC+ in 82 trips to the plate entering last night’s game. His injury history should scare teams a little bit; he’s never had more than 384 plate appearances in a season, and that was back in 2019. It’s also worth noting, as our associate editor Matt Martell wrote last year for the New York Times, that teams rarely trade for a catcher during the season because of the particular challenges that come with the position. Even so, I think Jansen is well-suited for the role Mitch Garver held last year with the Rangers: catching sometimes but also getting plenty of plate appearances at DH to make sure his bat stays in the lineup.

Defensive whiz Kevin Kiermaier, righty changeup specialist Trevor Richards, and lefty power bat Daniel Vogelbach round out the group of seven Blue Jays who get to fly freely at the end of the season.

Blow It Up

OK, but what if the Jays do decide to more or less tear it down? After all, it is the struggling big three hitters — Vladimir Guerrero Jr., Bo Bichette, and George Springer — who deserve at least a decent chunk of the blame for Toronto’s underperformance. The team didn’t even get a homer from a cleanup hitter until Bichette hit one on Wednesday — 48 games into the season!

I don’t think the Blue Jays would go so far as to trade Kevin Gausman, Chris Bassitt, or José Berríos, since Berríos is the only one pitching particularly well this year and his opt out after 2026 may complicate things too much to work out a trade, but the rest of that group of players with club control beyond this season could be on the block, headlined by Guerrero Jr. and Bichette.

Vladdy continues to tantalize with his bullet home runs (though he has only five this year) and massive exit velocity, but as we move further and further away from it, his MVP-caliber 2021 campaign looks more like an outlier than a sign of things to come, as it surely appeared to be in its immediate aftermath. Still, he’s in just his age-25 season, and it’s absolutely plausible that another team could bring out the best in him. I’m puzzled trying to figure out what he’d bring back in a trade, since he’s making $19.9 million this year and will probably be up around $25 million next year, but let’s not overthink things. He’s Vladimir Guerrero Jr., and if his suitors aren’t going to give up at least one top 100 prospect for him, the Blue Jays should tell them to get lost.

Bichette is more or less the same guy at the end of every season, with a wRC+ between 120 and 130 in each of the last four years; over the last three, he’s hit 29, 24, and 20 home runs, respectively. His fielding is always below average (but not terrible), and the only skill that’s on the decline is his base-stealing, with 25 stolen bases in 2021 followed by 13 in ’22 and just five last season, though he already has four this year. On the surface, the man is a metronome, but things get … weird … under the hood. Last year, his first-half wRC+ was 132, followed by 109 in the second half. The year prior, it was just 106 in the first half before he surged to 164 after the All-Star break. That streakiness is why I’m really not concerned about his performance thus far this year; the dude is bound to get hot at some point! It would be foolish of teams to just assume things will even out, but they shouldn’t read too much into his slow start, either. A contending team in need of a shortstop this year, such as the Giants or Guardians, would certainly be interested.

The Blue Jays would get far more modest returns for right-handed closer Jordan Romano, righty relievers Chad Green and Erik Swanson, lefty relievers Tim Mayza and Génesis Cabrera, and utilitymen Isiah Kiner-Falefa and Cavan Biggio, but they could be used as an add-on piece to sweeten the return in a trade for one of Toronto’s top players or to acquire prospect depth in a separate deal. After all, the Blue Jays’ farm system has just two Top 100 Prospects: lefty pitcher Ricky Tiedemann and infielder Orelvis Martinez.

I’m not here to advocate for Toronto to take any particular path; I’m just laying out the options. The worst plan for the Blue Jays would be not having one.

Weekend Windup

Here are some things to keep an eye on as we head into the long Memorial Day weekend:

• Ketel Marte looks to extend his 21-game hitting streak — the longest in the majors this season — when the Diamondbacks begin a three-game set at home tonight against the Marlins. Lefty Braxton Garrett gets the start for Miami, which bodes well for Marte, who is hitting .347 against lefties this year.

• The Cubs and Cardinals will finally meet for the first time this year, opening a three-game set tonight at Busch Stadium. The Cardinals have looked cooked for most of the first quarter of the season, but they enter the weekend just five games out of first place in the NL Central after winning eight of their last 10 games — including being the first team to sweep the Orioles in the regular season since Adley Rutschman came up two years ago.

Meanwhile, the Cubs are trending in the opposite direction after going 3-7 in their last 10 games. Still, they’re only two games behind the first-place Brewers. After a run of facing plenty of high octane starting pitchers (Jared Jones, Paul Skenes, Max Fried, Chris Sale, AJ Smith-Shawver), they’ll get to see three lower-velocity guys in Miles Mikolas, Matthew Liberatore, and Sonny Gray.

• Juan Soto returns to San Diego for the first time since the Padres traded him to the Yankees last December, and comes back to town on fire. Over his last six games, Soto is 9-for-23 (.391) with four home runs and seven RBIs. After a mini-slump dropped his average to .301 and his OPS to .917, those numbers are back to .312 and .972, respectively. He’ll be flanked in the lineup as usual by Anthony Volpe, who’s got a 16-game hitting streak, and Aaron Judge, who homered yet again on Thursday for his 15th of the season.

• Once his 10-game suspension for pitching with “sticky stuff” is over, Ronel Blanco is set to return on Sunday against the A’s. While he asserted the substance he got caught using was just rosin mixed with sweat, he’ll surely be under increased scrutiny. Blanco, who has a 2.09 ERA in eight starts so far in 2024, was the first pitcher to be suspended for foreign substances this season after four were suspended last year.

• Nick Lodolo is aiming to return to the Reds rotation on Monday, and boy could they use him. The Reds have floundered to a 4-16 record in their last 20 games, and Lodolo had a 3.34 ERA and 2.90 FIP in six starts before hitting the IL with a groin injury. That was his second IL stint this year, after he missed the season’s first couple weeks while recovering from the leg fracture that cost him most of 2023.

Ben Lindbergh and Meg Rowley banter about the end of the Orioles’ sweep-less streak, Oneil Cruz’s mismatch between top-tier tools and pedestrian production, the Phillies’ strength of schedule, Steven Okert and the etiquette of tipping one’s bullpen-cart driver, Kyle Hendricks and the decline of the 2016 Cubs’ core, and some Shohei Ohtani real-estate news. Then (47:14) they talk to The Athletic senior writer Evan Drellich about Rob Manfred’s press conference on Thursday, the uncertainty surrounding MLB’s broadcast/streaming future, the possibility (and potential ramifications) of nationalizing the sport’s media rights, a private-equity takeover of the minor leagues, and more, plus (1:27:57) several postscript follow-ups.

Audio intro: Philip Bergman, “Effectively Wild Theme”
Audio interstitial: Jonathan Crymes, “Effectively Wild Theme 2”
Audio outro: Ted O., “Effectively Wild Theme”

Link to O’s sweep story
Link to team records during streak
Link to Cruz tweet 1
Link to Cruz tweet 2
Link to Cruz tweet 3
Link to Cruz’s Savant page
Link to ESPN SoS
Link to Defector on SoS
Link to FG projected SoS
Link to Okert article 1
Link to Okert article 2
Link to MLBTR on Hendricks
Link to 2016 team batting age
Link to 2016 team pitching age
Link to Paine on the Cubs
Link to Russell article 1
Link to Russell article 2
Link to L.A. Ohtani house
Link to L.A. house 2
Link to Hawaii Ohtani house
Link to Hawaii house 2
Link to Evan on Manfred comments
Link to sickos meme
Link to Evan on national TV
Link to broadcast/streaming split
Link to article on churn
Link to Evan on Diamond Sports
Link to Evan on the other Diamond
Link to Steinbrenner comments
Link to Sheehan on Steinbrenner
Link to Winning Fixes Everything
Link to Manfred on framing
Link to first Ballers win
Link to EW Ballers episode
Link to GF w/o save leaders
Link to Ben on mid-PA changes
Link to Shildt game
Link to MLBTR on Baumann trade
Link to WDJDD song
Link to Phiten tweet
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It’s been a fun couple of weeks seeing all the work that has been done as a result of Statcast’s expanding into bat tracking. The great thing about this game is that there is always more to learn. With the addition of bat speed and swing length, we now have a better idea of telling the story of a player’s swing, but there is still so much more to tap into.

Back when I was using a Blast Motion bat sensor on a daily basis, I was exposed to every component of the swing that you could think of. Bat speed was one of them, but that only scratched the surface. There were pieces explaining my path at different points in the swing, how long it took my barrel to meet the plane of the ball, where in space that happened, and so much more. For a while, the public data available was focused on the outcome. What was the pitch? What was the result? What was the exit velocity and/or launch angle? With this new update, we’re progressing toward the how. How fast did the player swing? How long was their swing? We can now tie that in with the result, but there are additional details needed to understand the full scope of how results happened. That’ll be the focus of this piece.

First, it’s important to highlight the great work that has already been done explaining the new data we have and what the information tells (and doesn’t tell) us about the swing. Ben Clemens explained some applications of the new metrics and what their relationship with performance is on a macro scale. One thing Ben mentioned that resonated with me is thinking about the new (and old) information as inputs for us to use to understand performance rather than the answers themselves. Each piece works together to tell a story, whether that be league wide or player specific. Basically, these are pieces of information that need additional context.

Relatedly, Patrick Dubuque and Stephen Sutton-Brown from Baseball Prospectus, provided a great analysis of how to put bat speed into the context of pitch counts, from the perspective of both the hitter and pitcher. And there is more beyond just these two, including Noah Woodward’s Substack post about bat speed, swing length, and understanding what they mean and how they contribute to the swing.

Woodward touched on a few components of the swing that I’ve talked about in previous work that we still don’t have comprehensive data on from Statcast: contact point and attack angle. Swing variability, swing adjustability, having A and B swings, etc. are all extremely important to being successful at the big league level. If you have a hole in your swing, generally speaking, pitchers will expose you, so having multiple high-quality swings is going to set you up to have consistent success, just ask Triston Casas. Swing-by-swing data on attack angle, vertical and horizontal bat angle, and point of contact will all help the public understanding of swing variability, or when and how the swing changes in general.

Let’s start with attack angle. This is the angle of the bat path at contact, relative to the ground. As your bat travels through the zone, it creates a trajectory. To optimize your chances of hitting the ball in the air, the bat should be on an upward trajectory at contact, meaning you should have a positive attack angle. One component of swing variability is creating a positive attack angle at different heights, widths, and depths. You pretty much just want to be able to manipulate your barrel to move upward no matter where the pitch is. To get a better idea of what attack angle looks like, let’s look at a video from David Adler outlining a swing from Oneil Cruz:

Bat path tracking — Oneil Cruz 120.4 mph single (hardest-hit ball in MLB this year)

84.5 mph bat speed (75+ mph is the "fast swing" threshold) pic.twitter.com/FO9gA6fqva

— David Adler (@_dadler) May 21, 2024

While attack angle is officially measured as the angle of the path at contact, seeing the path leading up to contact can tell us what kind of depth the hitter creates. In this clip, the angle of the path changes as it moves from behind Cruz’s body to in front of it. This illuminates how attack angle is dependent on point of contact. In general, the farther in front of the plate your bat is, the easier it is to create a positive attack angle. However, this thread from Driveline’s Director of Hitting, Tanner Stokey, discusses the importance of creating bat speed deep in the zone. The best hitters create their peak speeds in tight windows. Like all facets of baseball, swinging is about striking a balance of creating high levels of bat speed and positive attack angles. You don’t want to have a one dimensional swing that is focused on high bat speed while ignoring the need to create ideal bat angles both deep in the zone and in front of the plate.

Depending on how you start your swing and enter the zone, it takes time to turn your barrel over into an upward slope. For many hitters, the bat needs to travel a greater distance to create the positive attack angle that leads to optimal contact. This, of course, takes more time. But, as Robert Orr pointed out last week in his piece on the relationship between pulled fly balls and swing length, a long swing isn’t necessarily a bad thing; it’s really just another data point. With access to attack angle, we could better tell the story of how a hitter like Isaac Paredes creates depth in his swing while often making ideal contact far out in front of the plate, versus a hitter who makes contact out in front without creating the necessary depth in their swing to avoid major holes.

At the same time, it’s still possible to create a positive attack angle deeper in the hitting zone. To get there, you need to make movements that aren’t easy to do while generating bat speed and controlling your body. Some hitters with great mobility use lateral torso bend — they lean toward their back leg right before contact — to get their barrel on an upward slope deep in the hitting zone. Think of Shohei Ohtani or Edouard Julien:

These two have unorthodox skills that allow them to launch pitches high in the air to the opposite field. With point of contact and attack angle, we’d be able to quantify how different they really are from their peers on top of the visual analysis.

Then there are hitters who create flatter (but still positive) attack angles with a path that stays on a similar plane throughout their swing. They get on plane with the ball early and don’t do much to change their path throughout the swing. It’s nearly impossible to do this with a steep swing. Juan Soto is a great example of this, even if he is more powerful than the other hitters with this swing style. Here is a great angle that illustrates what I’m referencing:

Bat path tracking — Juan Soto 112.0 mph line-drive single off Justin Verlander

Staying on top of a hanging curveball at the top of the zone pic.twitter.com/IRhdzHVMy8

— David Adler (@_dadler) May 8, 2024

Soto’s vertical entry angle (angle of the bat relative to the ground at the beginning of the downswing) isn’t far off from his attack angle. You can see how much this swing contrasts with that of Cruz, who is a big dude with a narrow stance. Because of that, his bat path is vertically oriented, and his bat needs to travel a greater distance to get on plane with the ball. With more detailed information of barrel angles at different points in the swing, we would know more about how hitters like Soto and Cruz vary from one another when it comes to getting and staying on plane.

This has been a ton of information all at once, so I’ll leave you with one last tidbit. Depending on the hitter, the angle of the path at contact can be very different from the angle of the barrel at contact (relative to the ground), known as vertical bat angle. While I’ve cited average vertical bat angle from SwingGraphs on several occasions, I’ve always focused on putting the metric into context because it varies based on several factors. Luis Arraez and Aaron Judge can have similar average vertical bat angles, but that doesn’t tell us anything about how different their swings are. We know the metric depends on pitch height, but even that alone isn’t enough to explain why Judge is a launcher and Arraez is a sprayer. As we learned earlier, each data point is an input and isn’t meant to be used alone.

There is no question teams have been using, monitoring, and applying these data to scout and develop players for years now, but despite all the metrics that we have, the information on the public side is still lagging. Ideally, in future years, we will gain access to more swing data so that we can better understand the game we love.

For years now, a simple message has been gaining traction in major league bullpens and pitching labs: Just throw it down the middle. As big league pitches have gotten speedier and bendier, the people who throw them have been increasingly advised to trust their stuff, stop nibbling around the edges, and attack the heart of the zone. Adam Berry wrote about the Rays adopting this approach in 2021. In 2022, Bryan Adams superfan Justin Choi looked into the numbers and noted, “In each season since 2015, when Statcast data became public, hitters have accumulated a negative run value against down-the-middle fastballs.” Last year, Stephanie Apstein documented the phenomenon in Baltimore, while Hannah Keyser and Zach Crizer did the same on a league-wide basis, describing the Rays model thusly:

Step 1: Develop unhittable stuff
Step 2: Let it rip down the middle
Step 3: Win

Just last week, Jeff Fletcher wrote that after trying and failing to get their pitchers to attack the zone more often, the Angels started putting their pitchers in the box to face their own arsenal, courtesy of a Trajekt pitching machine. “I knew my pitches were good,” said José Soriano through an interpreter, “but when I faced myself, I find out they’re really good. So I have more trust in my stuff now.” Pitches right down the middle are called meatballs for a reason, but if you’ve ever watched peak Max Scherzer demolish the heart of the other team’s lineup by simply pumping 97-mph fastballs across the heart of the plate, none of this comes as a galloping shock.

Still, I wondered whether I could find data to back up this shift in mindset. Are pitchers really attacking the zone more often? And are better pitching staffs (or staffs with better stuff) really attacking the middle of the plate more often? After all, the Angels rank 22nd in Stuff+ and 14th in PitchingBot Stuff, not to mention near the bottom in ERA, FIP, and xFIP. If they feel this good about their stuff, I’d imagine that every team does. Read the rest of this entry »

12:01

Dan Szymborski: Greetings!

12:02

Dan Szymborski: I’m sad to report that the chili I was making last week when we chatted did not turn out well.

12:02

Dan Szymborski: I got careless with the salt and the whole thing was way too salty.

12:02

Dan Szymborski: So I had to eat it with VERY improper cheese and sour cream added in to mute the saltiness.

12:04

Dan Szymborski: Both are certainly making their cases. Pitching development is weird, so when a guys’ working out a lot of the time it’s just him working out

Read the rest of this entry »