Milwaukee Brewers prospect Jacob Misiorowski delivered a standout performance on April 26 at American Family Field in Wisconsin, dominating the Philadelphia Phillies affiliate with six innings pitched, six hits allowed, four runs (three earned), nine strikeouts, and three walks.
Record-Breaking Velocity
Misiorowski topped out at 102.7 miles per hour (approximately 165.3 km/h) with a four-seam fastball in the fourth inning, securing the final out via a swinging strikeout. Data confirms this marks the hardest pitch recorded at the MiLB level since 2008, surpassing even top two-seam fastballs from that era.
In his debut start, he opened by fanning the first batter, Oneil Cruz, on three consecutive fastballs—all exceeding 100 mph. This velocity underscores his raw power in a league where such speeds remain rare.
Historical Context and Milestones
League tracking shows the previous high was Tarik Skubal’s 102.6 mph reading on May 25 of the prior season. Misiorowski’s mark stands out post-2008, when two-seam fastballs dominated placements.
Brandon Lowe followed with a 102.2 mph fastball for a whiff strikeout, but Misiorowski leads with multiple 102+ mph whiffs this season. Analysis highlights that since post-season two-seam systems, few pitchers have reached these speeds for game-altering outs.
If he sustains this against Cruz again on June 26, it would mark his third 102 mph-plus strikeout of the year, positioning him atop MiLB velocity leaders. Even in postseason chases, he ranks first (around 12 instances), ahead of Justin Verlander (7) and Jordan Hicks (6).
Career Potential
Misiorowski’s personal best stands at 104 mph. During Nashville’s doubleheader, he fired two 102 mph cutters past Kyle Keller, signaling elite command alongside velocity.
