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Jacob Misiorowski Is Baseball’s Hardest-Throwing and Most Dominant Starter

Record 104.5 mph velocity paired with an unprecedented low ERA has pushed him into Cy Young contention, stabilizing Milwaukee’s rotation.

Overview

  • Misiorowski has an 8-2 record, a 1.34 ERA and 131 strikeouts, leading the majors in wins and strikeouts and producing one of the season’s best statistical stretches.
  • Pitch-tracking data show a 104.5 mph peak, a single game with 58 pitches at 100+ mph and about 460 pitches at 100+ mph for the season, the most ever for a starter in the tracking era.
  • MLB.com credits his 0.17 ERA since May 1 as the best eight-start run since earned runs were officially recorded in 1913, and opponents are batting just .140 against him this year.
  • He has cut his walk rate and stretched his endurance after an offseason focus on leg strength, allowing one run over his last eight starts while striking out 80 and issuing nine walks in that span.
  • While hard-throwers have a history of arm injuries, analysts point to Misiorowski’s repeatable delivery and modern pitch-count practices as reasons to expect durability, and his rise has steadied an injury-hit Brewers rotation.