Gavin Sheets Found and Subsequently Lost the Blueprint to Success

[Yirsandy Rodríguez]

Gavin Sheets has always possessed one trait that can change a game in an instant: the ability to impact the game with one swing. His combination of size, strength, and barrel control allows him to turn pitches that other hitters might only put in play into hard, productive contact. When he finds the right location, Sheets does not need many opportunities to show the offensive value of his bat.

The challenge for a hitter with that profile comes when those ideal pitches become harder to find. Pitchers know they cannot simply attack him with fastballs in the strike zone. Instead, they throw the kitchen sink at him.

During May, Sheets found an answer to that problem. The improvement was not just reflected in his offensive numbers; the biggest difference came in the quality of his at-bats. He maintained his power while adding a skill that changes the way opponents must approach him: improved recognition and better discipline against secondary pitches.

His season has unfolded in three distinct phases.

The difference between May and the surrounding periods was not only the final production, but the way Sheets created those results. During March and April, he was already a dangerous hitter, but he still depended heavily on finding the right pitch to maximize his impact. His raw power kept his offensive value high, but pitchers could still exploit certain locations and velocity patterns to limit his best opportunities.

May showed a different version of Sheets. His walk rate climbed significantly, and his expected metrics reflected a real improvement in his decision-making. A 149 wRC+ indicated a true evolution as an offensive weapon.

The question was whether that version could survive once opponents adjusted.

May’s production map showed a hitter with greater control of the strike zone. Sheets had multiple areas where he could consistently generate offense, reducing the number of locations pitchers could attack with confidence. The clearest evidence came against the pitch types typically used to disrupt the rhythm of power hitters.

During May, Sheets turned several secondary pitches into opportunities. Against sliders, a pitch often designed to disrupt timing and induce weak contact, he produced a .396 xwOBA.

The changeup showed an even more significant transformation. After limiting him earlier in the season, the pitch became something Sheets could punish in May, as he hit .385 with a .615 slugging percentage against it.

That was the biggest step forward of the month: pitchers no longer had a simple formula built around changing speeds and waiting for a mistake.

Now, here in June, we've seen a reversion of course.

The offensive decline this month is not simply a matter of results. The biggest issue appeared in the same pitch types where Sheets had gained an advantage during May, when he was consistently winning those battles.

The most important warning signs came against sliders and changeups.

Against sliders:

• May: .222 AVG, .667 SLG, .396 xwOBA.
• June: .000 AVG, .000 SLG, .168 xwOBA.

Against changeups:

• May: .385 AVG, .615 SLG, .375 xwOBA.
• June: .000 AVG, .000 SLG, .125 xwOBA.

Pitchers regained the ability to use those offerings as tools to disrupt his approach. And yet, that adjustment does not mean Sheets suddenly became vulnerable to velocity. Against four-seam fastballs, the evolution has been:

The following chart provides a clearer look at how Sheets’ swing has performed inside the strike zone throughout the first half of the season.

When he receives a fastball in a favorable location, Sheets still has the ability to produce impact. His strongest xwOBA results remain concentrated inside the strike zone, with success against pitches over the middle, on the inner half, and even toward the outer edge.

The difference comes on pitches where he must identify the pitcher’s intent earlier. Once he lost his timing against sliders and changeups, the fastball became significantly more effective within the overall pitching mix, contributing to a notable decline in his power production.

June’s struggles are also accompanied by a drop in contact quality. His most dangerous batted balls became less frequent, and his expected production declined. May revealed a version of Sheets capable of controlling his at-bats and punishing a wider range of approaches. June has shown that this progress still needs to hold against game plans specifically designed to disrupt him.

If Sheets continues improving his discipline against sliders, changeups, and other secondary offerings, his offensive profile could continue trending upward. May revealed the level he can reach. June has become the next challenge in proving that version of himself can last.

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