The Milwaukee Brewers beat the Colorado Rockies 7-1 on Saturday, and right-hander Jacob Misiorowski punctuated the victory by throwing a 103.7 mph pitch in the third inning — the fastest recorded since full pitch tracking began in 2008.
That 103.7 mph offering came during an at-bat against Rockies third baseman Kyle Karros. It was one of 52 pitches Misiorowski sent over 100 mph in the game; he worked seven innings, allowed one run on four hits and struck out eight, and enters the record as a 2025 All-Star.
The raw number was the headline: no pitch has been clocked harder since tracking began in 2008. But the decisive detail came immediately after the radar blip — the pitch was well out of the strike zone, leaving Karros unhurt and turning the quote-unquote milestone into a moment rather than an automatic out.
Brewers manager Pat Murphy praised Misiorowski's extension and the velocity that produces those readings, but he also pushed back on treating heat as a complete answer. Murphy said the club likes the power of Misiorowski's arm, yet emphasized that the pitcher must stop relying on velocity alone and must get his other offerings into the zone.
MLB's X account even leaned into the spectacle, referencing a WWE rivalry as a tongue-in-cheek way to highlight Misiorowski's dominance. The social-media flourish underscored how unusual the outing was: 103.7 mph is a headline figure that drew instant attention from fans and analysts alike.
The friction in the performance is straightforward. Misiorowski produced 52 triple-digit pitches and carried his team deep into the game, showing both stamina and elite arm speed. But the fastest pitch — framed as the single most dateable event in the outing — did not produce the out it might have because it missed the zone. That gap between pure velocity and pitchability is the clearest remaining question from Saturday.
Fans consulting the brewers schedule will likely be eager to see when Misiorowski takes the mound again; the club has not confirmed his next start. What Saturday established is that Misiorowski possesses a rare physical tool — the fastest pitch in the modern tracking era — but it did not resolve whether he can consistently command that arm and put his secondary pitches where they need to be.
The conclusion is simple and practical: the 103.7 mph fastball makes Misiorowski an unmistakable weapon, but until he throws his other offerings for strikes more reliably, he will be a high-ceiling, high-variance starter rather than a finished answer for Milwaukee’s rotation.
