Jacob Misiorowski threw a 103.7 mph pitch during Saturday's game against the Colorado Rockies. According to ESPN, it was the fastest pitch thrown by a starting pitcher since MLB began tracking velocity in 2008.
Misiorowski is listed as the Brewers' ace. The record pitch came during a regular season game, with no additional context provided about the inning, the count, or the batter who faced it.
The 2008 date matters. That is when Statcast and its predecessor systems began capturing pitch speed across the league, giving the record a clear baseline. Any faster pitch thrown before that year would not appear in the official record.
Starting pitchers are generally expected to manage their velocity across multiple innings, unlike relievers who often throw harder in shorter outbursts. The 103.7 mph mark places Misiorowski's fastball in territory more commonly associated with elite closers and late-inning specialists.
No other Milwaukee starter has been publicly linked to a velocity mark close to this level. Misiorowski now holds the recorded standard for the role going back nearly two decades.
