Can The Marlins’ Top Slugger Keep This Up?

Marlins fans don’t have much to root for this year, especially given the disastrous results Sandy Alcantara has gotten in his first ten starts back from Tommy John surgery. Miami’s 21-31 record is already enough to put them nine games out of a Wild Card spot and 12.5 games back of the Phillies in the NL East. Given the fact that the Fish are already buried in the standings and Alcantara is struggling, it would be easy to expect this season to be little more than waiting for Eury Perez to get healthy and watching Max Meyer develop at the big league level.

Kyle Stowers has changed that with a phenomenal start to the season. Acquired from the Orioles alongside infielder Connor Norby at the trade deadline last year in exchange for lefty Trevor Rogers, Stowers showed very little in his first 50 games with the Marlins. In 172 plate appearances with Miami last year, he hit a paltry .186/.262/.295 (56 wRC+) with minimal power and a massive 35.5% strikeout rate. That left him with a lot to prove headed into 2025, especially given that he celebrated his 27th birthday back in January.

Fortunately for both Stowers and the Marlins, he’s gone well beyond looking like an everyday player in the majors in the early part of the year. In 204 plate appearances, Stowers has recorded a terrific .300/.369/.528 slash with ten home runs and a wRC+ of 145. That’s a top-25 offensive performance in the majors this year, on par with stars like Corbin Carroll and Jose Ramirez. That sort of offensive firepower would provide a much-needed boost to the Marlins’ lineup as they try to push through this latest rebuild — if Stowers can sustain it.

When looking at Stowers’ underlying metrics, the results are a mixed bag with some surface level peripherals telling different stories than others. The slugger’s .396 xwOBA is actually better than his .387 wOBA, which typically suggests that a player is more than earning his production. On the other hand, Stowers has undeniably benefited from a .379 BABIP, the seventh-highest figure in the majors so far this year and nine points higher than Seiya Suzuki’s 2024 performance, which led all qualified hitters. Stowers has tended toward high BABIP figures throughout his young MLB career, but that figure is almost certain to come down. That means he’s unlikely to remain a .300 hitter, particularly given his improved but still elevated 27.5% strikeout rate.

An explanation for Stowers’ impressive numbers can be found, to some extent, in one simple fact: he hits the ball hard very frequently. The outfielder’s 53.5% hard-hit rate this year is good for 16th in the majors among qualified hitters. His 91.5 mph average exit velocity is within the top 50, and perhaps most impressively, his 20.5% barrel rate is topped by just four players in baseball this year: Oneil Cruz, Shohei Ohtani, Aaron Judge, and Cal Raleigh. You can’t keep much better company than that in the power department, and as long as Stowers is barreling up one out of every five batted balls, he should be a productive player.

A comparison to Ohtani and Judge might make it seem as though Stowers is a guaranteed budding All-Star, but the reality isn’t quite that simple. That’s because the 27-year-old’s plate discipline is nearly as weak as his batted-ball profile is strong. Stowers swings at virtually everything, with the 12th-highest swing rate (55.7%) in the majors. Most of the players ahead of him on that leaderboard hit the ball incredibly hard, which Stowers does as well, but they also make contact at a solid rate, which Stowers does not. In fact, Stowers’ 69.4% contact rate is the tenth-lowest in baseball this year; only Guardians infielder Gabriel Arias swings more frequently while making contact less often, and his 91 wRC+ isn’t exactly something Stowers should be looking to emulate.

Between his high swing rate and low contact rate, Stowers is left tied for second in baseball behind Arias in swinging-strike rate this year. There’s some room for optimism, as the player he’s tied with is Bryce Harper. Harper has made his high swinging-strike rate work by mostly whiffing at pitches outside of he zone while still laying off those pitches often enough to draw a healthy number of walks. Stowers makes less contact on pitches in the zone than Harper, swings more often, and has a walk rate five percentage points lower than that of the star Phillies slugger.

Taking Stowers’ poor discipline and elite power potential together, it’s easy to see how he could have struggled so badly in his first 50 games with the Marlins while excelling so impressively through his next 50 games. When Stowers is getting his bat on the ball often enough for his power potential to carry his profile, like he is this season, he will likely excel. When that’s not happening and his strikeout rate is closer to the 35.5% clip he posted with the Fish last year, he’s likely to face some serious struggles without the discipline to lay off bad pitches and draw more walks.

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