Trent Grisham’s 2025 Bronx Breakout: Can “The Big Sleep” Sustain It?

When the Yankees acquired Trent Grisham as a throw-in to the Juan Soto trade, most fans expected a light-hitting defensive whiz, not a middle-of-the-order force. Yet in 2025 Grisham stunned everyone with 34 home runs, a .811 OPS, and 3.2 WAR, all career highs. How did this transformation happen, and is it for real? Let’s dig into the Statcast data behind Grisham’s breakout season and evaluate whether the newfound power will stick, all while the once-Gold-Glove center fielder tries to rediscover his defensive mojo.

From Mendoza Line to Top of the Order (A Surprising Season)

Grisham’s offensive explosion was nothing short of a redemption arc. In the three seasons prior, he hit under .200 with sub-.700 OPS each year, often looking overmatched at the plate. In 2024, he was essentially a fourth outfielder, batting .190 with 9 homers (91 OPS+) in 76 games, largely stuck behind Alex Verdugo, who posted a meager 84 OPS+ in a full season. The Yankees’ decision to play Verdugo over Grisham looked justified at the time; Grisham had slogged through consecutive seasons of ~.660 OPS.

Fast forward to 2025, and everything changed. Grisham slugged 34 homers with a .235/.348/.464 line (129 wRC+), shattering his previous highs. He became just the seventh MLB outfielder to top 34 HR that year (trailing only luminaries like Aaron Judge’s 53). Nearly 20% of his RBIs came via grand slams, tying for the MLB lead in slams, talk about delivering in big moments. By season’s end, Grisham had firmly entrenched himself as the Yankees’ #2 offensive weapon behind Judge, far outpacing other outfielders like rookie Jasson Domínguez (10 HR, 101 wRC+). It’s a turnaround so stark that even the most optimistic Yankees savant couldn’t have predicted it.

What fueled this breakout? The answer lies in a revamped plate approach and batted-ball profile. Grisham didn’t suddenly start swinging harder at everything; in fact, his plate discipline remained elite. He drew walks in 14.1% of plate appearances (career-high) and chased only 17.3% of pitches out of the zone, a 99th percentile chase rate. That patience has long been his foundation. The difference in 2025 was what he did when he swung: he began punishing pitches in the zone like never before.

Under the Hood: Barrel Rate, Hard Hit%, and Launch Angles Up

To understand Grisham’s improvements, let’s compare some key Statcast metrics from 2023 through 2025:

Barrels, the most flush, high-OPS contact, are way up. Grisham’s barrel rate jumped to 14.2% in 2025 (89th percentile), after hovering around 11-12% in prior years. He barreled 51 balls in 2025, more than double the 25 barrels he had in 2022. For context, league average barrel% is only ~7–8%, so Grisham was nearly double the norm. His hard hit rate (balls ≥95 mph) also ticked up to 46.4%, well above the ~37% MLB average. In other words, he’s making a lot louder contact. Notably, his average exit velocity (91.1 mph) and max EV (109.8 mph) in 2025 were personal bests, indicating his raw power ceiling hasn’t waned with age 28.

Perhaps most intriguing is the change in launch angle and contact quality. Grisham actually dialed his average launch angle down to 16.4° in 2025 from 18–20° in prior years (closer to optimal line drive territory) but he optimized his launch distribution. He dramatically increased the rate of balls hit in the “sweet spot” launch angle range (8–32°): 34.6% of his contact was in this ideal range, up from a career-low 25.6% in 2024. More balls in the sweet spot + hit hard = more extra-base hits. It’s no surprise his expected slugging percentage (xSLG) jumped to .498 in 2025 (86th percentile) from the high-.300s prior. In fact, his xSLG exceeded his actual .464 SLG, suggesting a few deep drives died at the wall. The same is true for xwOBA: Grisham’s expected wOBA was .370 vs an actual .353, meaning his overall quality of contact was excellent and not buoyed by luck. Far from a fluke, he may have been slightly unlucky, a scary thought for opposing pitchers.

Plate discipline + harder contact is a lethal combination. Grisham has always had the former (his walk and chase rates were elite again in 2025), and now he’s figured out the latter. The gradual nature of these changes, steady improvements in barrel%, hard-hit%, and expected stats from 2023 → 2024 → 2025 lends credence to their sustainability. This wasn’t a one month surge or an out of nowhere BABIP binge; it was the payoff of a three-year trend in the making.

Pulling for the Fences: A New Power Profile

If there’s one adjustment that unlocked Grisham’s power, it’s this: he became a pull hitter in the air. Upon joining the Yankees, Grisham and the analytics staff clearly realized that his left handed swing and Yankee Stadium’s dimensions were a match made in heaven, if he tailored his approach to exploit them. The mantra: “pull the ball in the air.” Grisham had already been a ~60% fly-ball hitter most years, but previously those flies weren’t directed to maximize damage. That changed in 2025, as Grisham started yanking balls to right field with intent.

Grisham’s base hits by season (2021–2025). Note the shift from a more balanced spray (top row, as a Padre) to an extreme pull focus in 2024–2025 with New York. Especially in 2025 (bottom right), the orange dots (HRs) cluster in right field, reflecting Grisham’s deliberate use of Yankee Stadium’s short porch.

Look no further than the pull rates. Grisham pulled 47.8% of his batted balls in 2025, up from ~38% in 2021 and ~43–45% in 2022–24. He’s always tugged the ball more each year, but now nearly half of everything he hits goes to right side. More importantly, he massively increased the right kind of pulled contact, pulled fly balls. His pulled air ball rate (percentage of fly balls & line drives that are hit to the pull side) jumped to 23.5% in 2025, up from ~18–20% in prior years and well above the ~16.7% MLB average. According to Statcast, that puts him in the top quartile of all hitters in pulled air frequency (five years ago he was below average).

And the payoff? Home runs, and lots of them. Pulled fly balls leave the yard far more often (especially at Yankee Stadium’s 314-ft right field porch), and Grisham’s 2025 spray chart is exhibit A. He was one of just seven left-handed hitters in MLB with 25+ pulled homers last season. He hit 26 of his 34 home runs to right field (77%), after never topping 12 pulled HR in any previous year. Many of those were classic Yankee Stadium shots, high fly balls that he angled perfectly into the short porch. But it’s not just a Yankee Stadium mirage; Grisham went deep plenty on the road as well, and his average HR distance actually increased, indicating genuine power gains.

Crucially, Grisham isn’t selling out for pull at the expense of quality. He did not start rolling over a bunch of weak grounders to the pull side, his ground-ball pull rate didn’t spike. He selectively hunted pitches he could elevate and pull, and he did damage when he got them. The short porch might have convinced him to fully embrace a pull-heavy approach that analytics had long suggested: “use the short porch” is easier advice to take when you see the tangible reward. Grisham himself has the plate discipline to wait for his pitch (remember that 99th percentile chase rate), and now he has the optimized swing to launch it. This approach is a proven recipe for power, just ask guys like Kyle Schwarber and pull side Aaron Judge. Grisham doesn’t have Judge’s raw all-fields pop (few do), but by focusing on yanking his hardest contact to RF, he’s carved out his own slugging identity in the Bronx.

It’s a dramatic transformation from the player Grisham was upon arrival in New York. As MLB.com noted, he went from an “elite defensive outfielder who might run into a homer” to a “top-tier slugging outfielder who might play a little defense”. The fact that he accepted a one-year Qualifying Offer at $22 million for 2026 speaks volumes, his bat earned him a fourfold raise after 2025. The Yankees essentially bet that the power breakout is real, and so far, the underlying data supports that bet. As long as Grisham continues to pull the ball in the air at his current clip, there’s little reason he can’t put up another 25–30 homer season in 2026. Yankee Stadium isn’t getting any deeper, and Grisham has clearly found a blueprint that works for him.

The Downside: Glove on the Shelf (Defensive Regression)

One trade off of Grisham’s offensive leap was an uncharacteristic slump in defense. Yankees fans were shocked in 2025 to see the two-time Gold Glove winner struggle in center field. By Defensive Runs Saved, Grisham had a nightmarish -11 DRS, the worst mark of his career and fourth worst among all qualified MLB center fielders. Statcast’s Outs Above Average was a bit kinder (around -2 OAA for 2025 in CF, roughly average), but even that is a far cry from the Grisham of old. For context, he logged +10 DRS in 2022 with San Diego (3rd among CF) and consistently ranked near the top in OAA (he was +13 OAA in 2022, among the league’s best). In 2025, that elite glove was MIA.

What happened? In a word, injuries, and perhaps the toll of selling out for offense. Grisham battled a nagging hamstring strain and a tender ankle during the season, which sapped some of his speed and range. He wasn’t 100% for much of the year, and it showed in a number of misplays and a general lack of the explosive jumps we’d come to expect. Statcast “Outfielder Jump” metrics had him at 0 OAA on 2-5 star catches (average), whereas he was +6 OAA in that department back in 2020. It’s also possible that Grisham’s increasing focus on hitting (and maybe adding muscle) could have marginally impacted his agility in the field. Whatever the cause, his defense in 2025 was uncharacteristically poor, by Fielding Bible metrics, he was among the bottom tier of everyday center fielders.

The good news is Grisham seems aware of the issue and motivated to fix it. He’s only 29 and has publicly stated his determination to “get that edge back” and contend for another Gold Glove in 2026. In spring interviews, he admitted he “took it personally” seeing his defensive metrics plummet and worked on his speed and reads in the offseason. If the hamstring is fully healed, there’s a reasonable chance Grisham’s glove can rebound closer to at least average. Yankee coaches have noted his renewed focus and believe he can still be an above average defender given his athleticism. A return to even +5 DRS form would make Grisham a complete player and substantially boost his overall value (in 2025, his fWAR was held to ~3.5 largely because of the defensive hit).

However, it’s also possible that 2025 was a harbinger of decline on defense. Defensive skills can erode quickly as players near their 30s, and Grisham’s sprint speed percentile has slipped from the high-80s earlier in his career to the mid-70s more recently. The Yankees have Jasson Domínguez (a natural CF) and top prospect Spencer Jones waiting in the wings, so Grisham’s leash in center may depend on early 2026 results. Notably, by September 2025, Domínguez saw his own playing time in left field vanish because Grisham’s bat had to be in the lineup every day, a testament to how valuable Grisham’s offense was. If Grisham can even be a neutral defender in center going forward, his bat will keep him in the lineup. If not, a shift to left field (with Cody Bellinger in center) could happen down the line to hide his defensive shortcomings.

Verdict: Sustainable or One-Year Wonder?

All signs point to Trent Grisham’s breakout being legitimately sustainable, at least to a very high level (even if not 100% replicating every stat). The driving factors behind his 2025 success are mostly under his control and repeatable: plate discipline, hard contact, and a flyball pull approach tailored to his home park. These aren’t fluky stats that regress heavily year to year. Grisham’s improvements built gradually and came with underlying percentile boosts (e.g. his barrel% and xwOBA moving into the top 10–15% of MLB). His expected metrics support his actual production, if anything, they imply he could have slugged even a bit more. At 29, he’s in his prime, not an aging journeyman who had one ultra-productive anomaly season. And the Yankee hitting environment (both the coaching philosophy and the ballpark) are perfectly suited to continue maximizing his strengths. As MLB.com’s analysis concluded, Grisham has transformed his profile to “maximize his power” and is “in position to keep slugging homers in 2026” so long as he sticks with the formula.

That said, expecting 34 homers every year might be a tad optimistic, even great hitters can have swings in output. Pitchers will surely make adjustments; they may try to exploit Grisham with off speed away (to neutralize his pull power) or challenge him more inside now that he’s doing damage. Grisham will need to show he can counter adjust (e.g. not chase those low and away sliders, which he’s mostly avoided so far, or be willing to go the other way when needed). Additionally, the elephant in the room is health and defense. If his legs are sound and his glove rebounds, it only reinforces his full value. If not, there’s a chance a defensive decline could indirectly affect his offense (e.g. if he DHs more or presses to compensate).

On balance, Yankees fans have every reason for optimism. What we witnessed in 2025 was a player finally aligning his skills with an optimal approach. It felt like a “light bulb” season for Grisham. He shed the “good glove, light bat” label and became a feared hitter who still has the toolset to be an asset in the field if he refocuses there. The narrative of Trent Grisham, from sub-Mendoza struggles in San Diego, to riding the Bronx bench, to becoming a clutch fan-favorite slugger (earning nicknames like “Big Sleep” and inspiring “Merry Grishmas” headlines) is one of perseverance and adaptation. It’s a classic redemption story in pinstripes.

Will 2026 bring an encore? If Grisham continues to lay off junk pitches, hunt his pitch to pull and elevate, and work to regain defensive confidence, there’s little doubt he can remain a vital part of a potentially historic Yankees outfield. A bit of natural regression (say he hits 25–28 HR instead of 34) could be offset by an uptick in OBP or defense. Even the projection systems that are often conservative see Grisham as a ~3 WAR player with 20+ HR going forward, and he’s already proven he can blow past that. The Yankees clearly believe in him (hence keeping him over other options), and Grisham himself is playing with a chip on his shoulder to show 2025 was just the beginning. In the end, Yankees fans should enjoy the ride, Trent Grisham’s breakout wasn’t a fluke, but the emergence of a fully realized version of the player he had the potential to be. If 2025 was Grisham’s coming-out party, 2026 will be all about the encore. And based on the numbers, the show is likely to go on in the Bronx.