Milwaukee Brewers right-hander Jacob Misiorowski sets a major league record for starting pitchers with a 104.5 mph fastball against the Philadelphia Phillies, the fastest pitch by a starter since pitch tracking began in 2008. Multiple outlets report that Misiorowski also registers additional elite velocities in the same stretch, including several pitches over 104 mph in an inning and five pitches topping 103 mph. One report says he throws four of the fastest pitches ever recorded by a starter within a single inning.
Other coverage adds that Misiorowski’s performance includes extended effectiveness even when results vary: he throws 47 pitches at 101 mph or faster in a later outing, while the team loses 3–2 to the Atlanta Braves despite him striking out the side early and giving up one earned run over eight starts. Several sources also describe Misiorowski as having broken his own previous velocity benchmark and note he later records a first career shutout with 15 strikeouts and more record-level velocity. Across articles, the common thread is Misiorowski’s unprecedented pitch speed as measured by tracking systems.
