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Veteran Closer Aroldis Chapman Completes Career-Best Season at Age 37
1 Oct, 2025
Summary
- Aroldis Chapman, 37, had the best regular season of his 16-year career
- Recorded 32 saves with a 1.17 ERA, 0.70 WHIP, and 37.3% strikeout rate
- Worked extensively with a pitching coach to improve command and mechanics

Aroldis Chapman, a 37-year-old veteran closer, has just completed the best regular season of his 16-year MLB career. After languishing in mediocrity for the past three years, Chapman has undergone a remarkable resurgence, thanks to his tireless work with a pitching coach to improve his command and mechanics.
Over the past three offseasons, Chapman has been working closely with Hector Berrios, a former minor league pitcher and pitching coach, to address issues with his grip, focus, and lower-body mechanics. The results of their collaboration have been on full display this season, as Chapman recorded 32 saves with a minuscule 1.17 ERA, 0.70 WHIP, and a 37.3% strikeout rate.
Chapman's dominant performance has been a key factor in the Boston Red Sox's return to the postseason for the first time in four years. The veteran closer's meticulous preparation, both in the gym and on the mound, has allowed him to defy the aging curve and reclaim his status as one of the game's most dominant relievers.
As the Red Sox prepare for the American League Wild Card Series, Chapman will have the opportunity to exorcise his postseason demons, particularly against the New York Yankees, the team that cut ties with him in 2022. With his renewed focus and command, Chapman is poised to make a significant impact in the playoffs and cement his legacy as one of the greatest closers of his era.