No player wants to suffer a significant, season-ending injury like Jung Hoo Lee did last May, especially in their rookie year. But when players do find themselves in that situation, they can at least use the time to reflect on their performance and make adjustments that they think will improve their game upon their return. Despite it being early in the season, it seems that is exactly what Lee has done.
The Giants center fielder’s offensive improvements warrant a look under the hood to see exactly what he has changed, because right now, he seems like a completely different player from the one we saw last year. So far this season, Lee is sporting a 192 wRC+, a .394 xwOBA (86th percentile), a 43.1% sweet-spot rate (87th percentile), and a .446 xwOBACON. Those are all big improvements compared to his limited 2024 sample. Read the rest of this entry »
Rob Schumacher/The Republic-USA TODAY NETWORK via Imagn Images
Spring is a time of batting stance changes. As players come back from their offseason workouts and sessions with their private hitting coaches, they may have new setups and mechanics that they believe will make them better hitters in the year ahead. Typically, we can notice stance changes right away, but throughout spring training and the first few weeks of the regular season, it can be difficult to determine whether an alteration will have any real impact on a player’s performance. A lot of times, a change can be noise, so filtering through why it was made is critical to understanding its eventual effectiveness. I approach this by thinking about a hitter’s weakness and how the change might address it. In the case of Corbin Carroll, there is a straightforward story to be told that makes me confident his new stance will be impactful in the long term.
Before we get into why Carroll changed his stance from a data perspective, let’s discuss his reasoning behind the change and what it looks like, much of which was reported on during spring training. As Carroll told Alex Weiner of Arizona Sports, his intention with the stance change was to “have a better hand position to fire from.” Carroll has been tweaking his hand position since the second half of last season, but where his hands are now versus then is different, as you can see below in this side-by-side screenshot posted by DBacks Dispatch:
Corbin Carroll has changed his batting stance in spring, he’s brought down his arms and has crouched in a little more pic.twitter.com/MVihuS5I2x
My main focus is how he’s shifted his hands forward, closer to his face than they were even after he made his tweak last summer. That change alone puts him in a much different position before his downswing, and therefore, sets him up for a different bat path. Let’s get into why. Read the rest of this entry »
Man, it sure is nice to have baseball back, and we’ve already been treated with fantastic performances from across the league. There have been the usual Aaron Judge home runs, the return of Jacob deGrom’s dominance, the stretch of surprising Marlins walk-offs, and so much more. But for the next few minutes, we’re going to focus on the elite defense on display so far this season.
Great defense can come about in so many ways. Sometimes, it’s a feat of raw athleticism, while other excellent plays are a testament to the fielder’s intuition and preparation. Aside from actually making the plays, fielders must consider a multitude of factors in an extremely limited amount of time; the best fielders are also the best real-time processors. The best way to explain this is by watching it in action.
If you’re not familiar with Jerry Weinstein, you should be. He is a catching coach legend. After decades with the Rockies, he recently jumped to the Cubs, and lucky for us, he’s quite active online talking about catching philosophies and training. One thing he has discussed recently is “slam dunk” framing.
Some cues in baseball are universal, and slam dunk framing is one of them. It looks just like how it sounds: Catchers take their glove and quickly snap it down as if they were dunking a basketball. What’s the intention? By moving their glove down in a quick, fluid motion on pitches at the top of the zone, they’re attempting to give the impression that these pitches are lower than where they actually crossed the plate.
While this could easily just be another solo Patrick Bailey framing post, there is one other guy in particular, Cal Raleigh, who deserves to squat in the spotlight. To set the stage, here are the leaders in Strike% in Zone 12 (the upper third in the shadow zone) last season: Read the rest of this entry »
For the third consecutive offseason, Justin Turner has signed to play for a new team. This time, he is heading to the north side of Chicago, after he and the Cubs agreed to a one-year deal worth $6 million earlier this week. Turner, who turned 40 in November, will likely split time at DH and 1B. The reason to add Turner at this stage in his career is straight forward: He can still hit at an above league average clip.
Considering Turner is entering his 17th major league season, you likely already know a lot about his game. His whiff and strikeout rates have stayed in the upper quartile even as he has aged, he doesn’t chase much, and has a great feel for spraying the ball to all fields. It’s the exact group of traits that a hitter without much explosiveness needs to survive this many years. Here is a quick reminder of his performance over the last handful of years to put into perspective where he is at right now:
Old Man Turner’s Still Got It
Season
wRC+
K% Percentile
Whiff% Percentile
Chase% Percentile
xwOBACON
VBA
2021
126
80th
88th
83rd
.383
36.9
2022
123
78th
78th
65th
.367
34.9
2023
115
77th
92nd
71st
.367
34.4
2024
117
74th
90th
72nd
.343
34.2
There is no doubt his contact quality has dipped. That’s likely a function of his bottom decile bat speed. But along with that has come improved whiff rates. This compensation represents a new version of how Turner has been successful with his current physical attributes. It’s a benefit to any team to plug in this type of hitter, especially because he is productive and essentially platoon neutral.
To be frank, though, I don’t think a full on, comprehensive analysis of Turner’s offensive game is completely needed at this point. We’ve seen what he can do and have a good idea what type of hitter he is now. Instead, I want to use this time to highlight what I think is the most impressive part of Turner’s game, the part that makes me enthusiastic to watch him in the twilight of his career: His ability to hit sinkers. Read the rest of this entry »
Kamil Krzaczynski-Imagn Images and Jerome Miron-Imagn Images
As the reliever market picked up over the last week, two right-handers, both former closers, found new homes in the Central divisions. First, last Wednesday, Paul Sewald agreed to a one-year deal with the Cleveland Guardians. Then, on Sunday, Ryan Pressly waived his no-trade clause in order for the Houston Astros to send him to the Chicago Cubs for the final guaranteed year of his contract.
While both of these pitchers are likely past their peaks in terms of stuff, they’ll look to continue being contributors with their new clubs. Let’s examine the potential impact of these moves and discuss how the two pitchers will fit into the bullpens of their new teams.
Sewald Joins Elite Cleveland Bullpen
Coming off a down year relative to his previous three seasons, Sewald’s deal with the Guardians is for one year and $6 million, with a $10 million mutual option for 2026. The move solidifies the middle part of their bullpen, which already was one of the best in the majors. With Emmanuel Clase, Cade Smith, and Hunter Gaddis anchoring the group, Sewald will occupy a lesser role than he’s held over the last few years. That’s not a bad thing for him, as he can work to return to form without the pressure of having to deliver in high-leverage innings.
As velocities have increased over the years, and hitters have adapted to them, the margins for error for pitchers living in the low-90s band have grown thinner and thinner. What we saw from Sewald last season is a good example of what happens when pitchers with such a profile lose even just one tick on their fastballs.
From 2021-23, a three-year stretch during which Sewald was one of the better relievers in baseball, his four-seamer ranged from 92.2 mph to 92.5 mph. It was extremely consistent on that front. Then, in 2024, that number dropped down to 91.4 mph on average, and with that, his performance also dropped. Here is a quick summary of how Sewald’s performance on his heater regressed last season:
Paul Sewald Four-Seamer, 2021-24
Season
xwOBA
Whiff%
Avg. Height
Avg. Horizontal Release
2021
.269
33.0%
2.77
-3.83
2022
.297
29.5%
2.91
-3.71
2023
.264
28.4%
2.90
-3.70
2024
.325
24.3%
3.08
-3.60
SOURCE: Baseball Savant
As his fastball velocity fell last year, Sewald saw a sharp decrease in its effectiveness by both whiffs and overall performance. This could be related to the pitch’s location and its release angle; over the last four seasons, he’s been throwing his fastball progressively higher and higher in the zone and releasing it closer to the middle of the pitcher’s mound. Combine that with a dip in velocity and, suddenly, the pitch was just more normal than it had been in the past.
Another problem for Sewald last year was his sweeper, the pitch that was most responsible for turning him into a high-leverage reliever upon joining the Mariners in 2021. His overall numbers with it suggest it was still a weapon — he held opponents to a .196 average (.214 xBA) and a .214 wOBA (.258 xwOBA) against it — but a closer look tells a different story.
During his aforementioned three-year stretch of excellence, he was comfortable throwing his sweeper to both lefties and righties as a way to keep them off his fastball. In each of those three seasons, he threw his sweeper at least 45% of the time against righties and at least 35% of the time when facing lefties, and it was effective against both sides. That’s especially important because Sewald is mostly a two-pitch pitcher. Last year, however, lefties teed off on his sweeper. Check this out:
Paul Sewald Sweeper Splits, 2021-24
Season
Overall xwOBA
xwOBA vs. RHH
xwOBA vs. LHH
2021
.256
.248
.275
2022
.204
.201
.209
2023
.248
.230
.272
2024
.258
.218
.369
SOURCE: Baseball Savant
So what changed? Perhaps some of it can be attributed to his diminished fastball velocity, which has cut the velocity gap between his fastball and sweeper to 8.3 mph, down from 9.7 in 2022. Except, the velo difference between the two pitches was also 8.3 mph in 2023, and that season both pitches were still effective against lefties and righties. The greater issue here seems to be the same thing that threw off his fastball: his release point, which also shifted more toward the middle of the mound when throwing his sweeper. As a result, he struggled to command his sweeper in 2024, as you can see in these two heat maps. The first one is from 2023, the second from 2024.
He started throwing the pitch more in the middle plate and less often out of the zone. Even with lesser command, he could still keep righties at bay with his sweeper because the pitch breaks away from them. Against lefties, though, he has less margin for error with his location. Sweepers that remain in the zone against lefties break nicely into their bat paths. That’s not a recipe for success.
It’s worth noting that some of Sewald’s struggles in 2024 could be injury-related, as he dealt with both neck and oblique injuries that could’ve caused his dip in velocity. These ailments might also explain his change in location and horizontal release point, as the neck and oblique muscles are especially important for a pitcher’s upper-body mechanics. Sewald turns 35 in late May, so some of his diminished stuff could be attributed to aging, but if he is healthy, we should expect him to have some sort of rebound — even if he doesn’t get back to the peak performance from his days with the Mariners.
Pressly Takes Over as Cubs Closer
For most of the offseason, the Astros have been trying to trade Pressly to shed some salary, and as they revived their efforts to re-sign Alex Bregman last week, moving Pressly seemed to become an even greater priority. Of course, Houston has not yet brought back Bregman, but either way, trading Pressly gave the Astros more financial flexibility.
Houston sent over $5.5 million to cover Pressly’s salary this season, but nothing if his contract vests for 2026. The Cubs sent back Juan Bello, a 20-year-old pitching prospect who was recently ranked no. 31 on the Cubs’ prospect list. Bello is a 35+ FV starting pitcher who, according to our prospect writers Eric Longenhagen and Travis Ice, “has enough projectability and existing stuff to be forecast in a depth starter role, but he’ll need to harness his secondaries in the zone more often to consistently get more advanced hitters out and turn over a lineup.”
The 36-year-old Pressly had been a valuable member of the bullpen since the Astros traded for him in late July 2018, and during the same three-year stretch in which Sewald shined, Pressly emerged as one of the top closers in the American League. However, Houston’s signing of Josh Hader before last season relegated Pressly to a setup role and ultimately made him expendable this offseason. Astros GM Dana Brown said earlier today that the Hader signing and Pressly’s corresponding demotion in the bullpen pecking order caused a “fracture” in his and Pressly’s relationship. Now with the Cubs, Pressly is expected to return to closing games.
Similar to Sewald, Pressly is coming off a season with a notable decrease in velocity, from 94.7 mph in 2023 to 93.8 mph last year. His diminishing fastball didn’t exactly come as a surpsise, though. In 2022, batters posted a .402 xwOBA against his four-seamer, and in response, he cut its usage from 32.9% that year down to 23.1% in 2023. He leaned more on his slider, which for years has been his best pitch by run value by a wide margin. It’s odd, then, that he used his four-seamer more often than any other pitch in 2024. This pitch mix shift didn’t pay off, as opponents slugged .500 against his heater with a .371 wOBA and a .365 xwOBA, compared to their .333 SLG, .276 wOBA, and .271 xwOBA against his slider. I imagine Chicago will get him back to throwing primarily sliders again next season. For some more context, here is a three-year snapshot of Pressly’s Stuff+ and usage for his three main pitches:
Ryan Pressly Stuff+ and Usage, 2022-24
Season
Fastball Stuff+
Fastball Usage
Slider Stuff+
Slider Usage
Curveball Stuff+
Curveball Usage
2022
122
32.9%
169
36.7%
128
26.9%
2023
126
23.1%
179
40.0%
156
26.4%
2024
99
33.3%
152
28.9%
130
24.9%
Relievers who switch teams looking for bounce backs are always fun stories to follow. Both Sewald and Pressly are in the later stages of their careers but have an opportunity to be important contributors on contending clubs. I’ll be paying attention to any potential adjustments they make come spring time.
Lately, I’ve been very interested in analyzing hitters who make a living off crushing everything in the upper third of the strike zone. As the rise of four-seamers up in the zone has turned that area into a hole for more hitters (especially in terms of whiffs), having someone in the lineup who excels in that area is very valuable. As I perused the leaderboards looking for the best hitters in the upper third, I had an expectation that most, if not all, of them would either have a very flat swing or be on the shorter side with shorter arms. It’s a simple story. If your swing is flat, you’re on plane with the pitch. And if you’re a shorter player or have shorter levers, you should be able to get on plane with pitches in the upper third very quickly.
That story is mostly true, but it wouldn’t be baseball if there weren’t an exception or two. Here is the list of the top 10 hitters against pitches in the upper third by xwOBA in 2024. I used a 15-hit minimum to ensure my focus was on the players who have had success with batted balls in this area:
After last year’s disappointing follow-up to their 2023 World Series-winning season, the Texas Rangers jumped the first base market in December and improved the rest of their roster in the process. First, at the Winter Meetings, they acquired corner infielder Jake Burger in a trade with the Miami Marlins, a move that gave us one of Michael Baumann’s best headlines: “Everything Is Burger in Texas.”
Burger’s addition made incumbent first baseman Nathaniel Lowe expendable; sure enough, a few weeks after the Burger trade, Texas sent Lowe to the Washington Nationals for left-handed reliever Robert Garcia.
Immediately after moving Lowe, the Rangers added some thump to their lineup with the signing of Joc Pederson to a two-year, $37 million deal with a mutual option for a third season. Altogether, the three moves essentially function as a two-for-one lineup swap, one that should provide more power to this offense, and also come with the bonus of fortifying their bullpen with a solid lefty who has yet to reach arbitration. Read the rest of this entry »
I’ve been a fan of Brent Rooker since he was crushing baseballs at Mississippi State, so it was exciting to see him elevate his offense in 2023 after three years of struggling in the majors. His improvements stemmed from changes he made to his load. He added larger, slower movements as he prepared to swing, which helped him to generate more power while keeping his body under control. To do this, he switched from a simple toe tap to a more dramatic foot hover, allowing him to do a complete hand row while loading and giving him more time to sync the rhythm of his upper and lower body before exploding toward the ball.
The result was a breakout season in which he batted .246 with 30 home runs and a 126 wRC+. Despite his improvements, though, Rooker was not a finished product. Strikeouts have always been part of his game, so his 32.7% strikeout rate wasn’t all that surprising even after his adjustments. Teams accept whiffs as a necessary tradeoff for more power, but all these strikeouts were indicative of a hole in Rooker’s swing that limited his value.
From 2020-2023, Rooker had one of the steepest swings in baseball, making it easier for him to launch the ball in the air. But unlike other steep hitters, such as Mike Trout and Freddie Freeman, Rooker didn’t have the variability to alter his swing to get to pitches outside of his wheelhouse. This left him exposed to high fastballs. Even as he slightly dropped his VBA in 2023, he still ran a 40% whiff rate and .285 xwOBA on pitches at the top of the zone. That was the 16th-worst whiff rate out of 217 hitters who saw at least 1,500 pitches that season.
This all relates to the balance that hitters with steeper swings have to strike. Yes, it’s easier to create launch with a steeper angle (duh!), but you don’t want to be one dimensional to the point where you’re taking the same swing every time. It’s a problem that a lot of younger hitters are forced to reckon with when they reach the big leagues because pitchers simply have nastier stuff and are better at executing. Although Rooker developed a better idea of how he could be successful in the big leagues, he still had a major hole to address. Boy did he do that this past season!
Across 614 plate appearances this year, Rooker was one of the best hitters in baseball, batting .292 with 39 homers, a 164 wRC+, and a .510 xwOBACON (99th percentile), while his strikeout rate dropped to 28.8%. Those are big improvements across the board. Perhaps unsurprisingly, his success this season came with a flatter swing, which had a positive impact on his performance at the top of the zone:
Rooker Upper Third Improvements
Season
VBA
xwOBA
Whiff%
2023
36.7
.285
39.8
2024
35.5
.325
31.1
SOURCE: Baseball Savant, SwingGraphs
It’s a simple story to track. On average, Rooker’s swings were flatter at contact, giving him a better chance to be effective at the top of the zone where pitchers were likely to target him this season. He took the biggest hole in his game and made it a smaller one; as a result, his strengths played up more. Of course, that’s easier said than done, so it’s worth examining how he did it. Now comes the fun part of the analysis.
Thinking in terms of reciprocal movements, in order to get to a different angle at contact, it seems likely that Rooker changed his initial position. And what do you know? That’s exactly what happened! Once again, he altered his setup. The following swings are all against fastballs in the upper third of the zone, three from 2023 and three from this past season:
2023
2024
Here, you’ll notice two changes that had a direct impact on the path of his barrel: His hands are higher and his stride leg is slightly open. He most likely opened up his front leg to improve his balance and/or change his rotational direction. Right now, though, I’m more interested in his adjusting his hand position.
Typically, batters raise their hands to make it easier to maintain a flatter barrel, make contact deeper in the zone, and shorten their swing length. That all sounds wonderful, but some sluggers refrain from this adjustment because it becomes more difficult for them to create launch. Turns out, that wasn’t the case for Rooker; his flatter swing was still steep enough to crush balls in the air.
The other benefit here is just as important. Having higher hands allowed him to make contact deeper in the zone. Look at the final clip above from 2024. Even though he was late on this fastball, he could still rip a single to right center. We don’t have swing length data from 2023, so we can’t say for sure that Rooker’s swing was shorter in 2024, but batters with higher hands tend to have shorter, flatter swings. Pitches at the top of the zone get on batters more quickly than pitches in the middle or lower thirds. To hit those high pitches, batters need to get their barrels into the zone sooner, and shorter, flatter swings cut down the space that batters need to cover to get to the point of contact. This adjustment would explain Rooker’s improvement on pitches up in the zone.
Rooker’s path to stardom has been a fantastic player development story. He was not complacent after his initial breakout in 2023. Instead, he made additional adjustments to his profile. Many players want to fix their weaknesses, but it’s incredibly hard to do so. That Rooker identified and addressed the hole in his game so quickly is a testament to his talent and makes me more confident that he’ll continue to be one of the game’s top hitters for a while.
As a player’s body changes over time, the same movements he used to make may not work well for him anymore. Adjusting to these changes (or not) will make or break his career. These changes have been especially stark for Giancarlo Stanton. The 35-year-old slugger serves as an interesting case for observing how great hitters can alter their swings over time to adjust to their changing physical attributes.
Stanton had a 116 wRC+ in 459 plate appearances in 2024 – the 15th season of his career. That’s nearly identical to the 118 mark he set across 396 plate appearances as a rookie in 2010. The difference between Stanton then and now, though, is night and day. Let’s take a look at Stanton at age 20 to get an idea of what his swing was like during his first major league season:
Open stance, non-neutral shin angle, slight hand row. None of these things are currently present in Stanton’s swing. None. When he came up, he looked like an uber-athletic NFL tight end. He could run well, move fluidly, and was twitchy enough to have a bit of extra movement in his swing (compared to recent years) and still have success. Yeah, he struck out over 30% of the time in his rookie campaign, but he was still learning big league pitching. He boasted a 141 wRC+ the following season with a very similar swing. It wasn’t until his third season where there was an obvious change. This was when Stanton showed what he was really capable of at the plate (and when he started going by Giancarlo):
Now that’s what I’m talking about. These are truly Stantonian homers here. In 2012, Stanton raised his wRC+ to 158, delivering 5.1 WAR in just 123 games. He cemented himself as one of the scariest sluggers in the game, and much of that should be attributed to his mechanical adjustments. He changed his stance to a neutral position and raised his hands up a considerable amount. From this point on, his hands would stay in a higher slot. His hand row from the previous two seasons always brought him to a higher point than where he started in his setup. As a player with 80-grade power, he didn’t really need that extra movement to create force. Depending on your body type (arm length, upper body flexibility, etc.), swinging a flat bat from a high slot makes it easier to get your bat on plane. Since he wasn’t the type of hitter who varies his shoulder plane all that much, it was a logical change to simplify his approach.
Even with these changes, we’re still pretty far off from where Stanton has been over the last few seasons. He maintained these mechanics throughout 2012 and 2013. However, during this time, health became an issue. He missed time in both of these seasons for knee, abdominal , ankle, thigh and shoulder injuries. Without biomechanical data, we can’t definitively say these injuries forced his body to change and/or he had to adjust his swing to compensate for his compromised health, but my goodness, those are injuries almost from head to toe! It wasn’t until the 2014 season that Stanton played over 140 games in a single season. And unsurprisingly, he came into that year with another modified setup:
This is the first time in his career where we saw Stanton narrow his stance. I’m theorizing here, but taking away movement could have had two benefits for him: Similar to my point before, he is so strong that he never really needed to move all that much to create power, and less movement would give him a better shot at making contact. Second, by narrowing his stance and not crouching as much, he would put less stress on his body. He ended this season with a 161 wRC+, the highest mark of his career. He also remained healthy until the middle of September, when he was hit in the face by a pitch that prematurely ended his season.
The narrowed stance kept working for him in 2015. Across his 74 games to start the year, he scorched 27 home runs — a full-season pace of 58. But on June 26 — his 74th game — he broke his hamate bone swinging at some point during his final two at-bats, both strikeouts, and missed the rest of the season.
The one thing about Stanton’s swing that he has never really reconciled is that he doesn’t decelerate much. I think this is a big reason why we see such egregious whiffs from him. Once he gets started, there is no slowing down. It also comes with some added risk of injury. This is such a violent swing, and his body bears the brunt of that force because he doesn’t have the brakes in place to come to a controlled stop.
Although he was healthy to start the season in 2016, it was clear the injury had compromised him. By the end of the year, he’d completely gotten away from the setup that he’d had so much success with before the hamate injury. In fact, he returned to a similar stance that we saw from him early on in his career:
Forward lean, slightly open hips, and more knee bend. Sound familiar? That’s because this is essentially rookie year Stanton, not the great hitter he was in 2014-2015. His performance also reverted back to where it was in 2010; his 118 wRC+ in 2016 was identical to his mark as a rookie. It makes sense, then, that he ditched this setup in 2017. Closed stance Stanton has entered the chat:
Stanton didn’t close his stance off until about June, but he didn’t run it back the first few months with the stance he used during his down 2016 season. He came into 2017 with the same stance he had in 2014-2015, when he was raking. But from the summer on, he closed things up, finishing the season with 59 home runs and winning NL MVP. It was a special run that completely took off due to another mechanical change – probably the most important of his career.
Stanton was traded to the Yankees following the 2017 season and showed up with the same exact setup, and for good reason. After struggling big time out of the gate, he ended up with a 128 wRC+. Not great but still very good. He was healthy for pretty much the entire season too, playing in 158 games. Then in 2019, the injuries piled up. After a knee injury that kept him out for almost the entire year, he returned in the playoffs and sustained a quad injury. Then it was hamstring injury that limited him to 23 games during the shortened 2020 season. Over the two years, he played in a total of 61 regular season games.
Unlike other times in his career, Stanton’s injuries in those seasons didn’t lead to a mechanical overhaul. At this point in his career, he knew what the best version of himself looked like. If he could get his body back to feeling healthy, it made sense not to go through any big changes. And in 2021, that worked out well. He swatted 35 homers in 139 games and finished with a 138 wRC+. He suffered a minor quad strain early in the season, but other than that, he was healthy all year.
Though he missed 10 days with a minor calf strain in late May/early June, Stanton was also mostly healthy for the first half of 2022, and he hit well enough to make the All-Star team (133 wRC+ during the first half). But then the lower body injuries returned, and this time they were even lower than before. He made it three days into the second half before landing on the IL with Achilles tendonitis. He missed just over a month, and when he came back in late August, it took him about two weeks to get going. He also had a minor injury scare when he fouled a ball off his foot on September 5; he wasn’t in the lineup for the Yankees’ next four games, though he did pinch hit in two of them. He caught fire upon returning to the lineup on September 10, posting a 133 wRC+ with seven home runs over his final 79 plate appearances of the regular season.
Still, these particular injuries represented a new challenge for Stanton. As a closed-stance hitter, he is far more reliant on his connection to the ground, making these repeated injuries from the ankle downward especially concerning. Not only does he have to regain his strength, but he also has to figure out how to move in space and interact with the ground. This gets more difficult for players as they age and the injuries compound. The thing about Stanton, though, is he has always been willing to tweak his mechanics. However, he needed to hit rock bottom before deciding to go away from the setup that he’d had so much success with for so long.
Health was a problem for Stanton again in 2023. He strained his hamstring in April and missed almost two months. Upon his return, he was far off from his diminished 2022 form, when he finished the year with 113 wRC+, which to that point was the worst mark of his career. His 86 wRC+ to end the year was bleak. He stayed healthy after his return, but the awful performance brought up the question: Was this just too much for him to overcome? For Stanton, the answer was to do what he had done so well for his entire career. He made some more changes, this time to his mechanics and his body.
There was a lot of discussion around Stanton’s adjustments at the beginning of 2024, including this comprehensive look from Jay Jaffe. In short, the main point was that he slimmed down (a lot!) and shifted closer to the neutral setup he had from 2014 and 2015 rather than the extreme closed stance he had employed beginning in June of 2017.
This goes back to the talk about matching your swing to your physical attributes. Stanton has dealt with so many lower body issues over the last five years, and they have impacted what he can do physically. He couldn’t sustain the same movement pattern in the closed stance with his current body, so he went to a similar version of the swing that his body could handle. His regular season still wasn’t great, but it was a major step up from the year before. And when you consider the show he put on in October, it’s safe to say his changes worked pretty well overall. For a last look, let’s see where he stands as of October, from a mechanical perspective:
Whatever your opinion is of Stanton’s career, how he projects for the rest of it, or anything related to that, there is no denying that what he has done throughout the last 15 years has been remarkable. There aren’t many hitters who can change as much as he has and still have success. A big part of being a great baseball player is making adjustments. Stanton has done that incredibly well for a long, long time.