Jacob Misiorowski wasted no time setting yet another MLB record on Saturday night.
The Milwaukee Brewers ace lit up the radar gun on his first pitch, throwing a 4-seam fastball that registered 104.8 mph. The broadcast had it at 105 mph, but the official ruling was just slightly slower.
Jacob Misiorowski announces his presence with authority.
105 mph 1st Pitch of the Game 😳 pic.twitter.com/rItzDz3JSg
— Rob Friedman (@PitchingNinja) October 4, 2026
This set a new record, surpassing Mason Miller’s 104.5 mph mark from 2025.
While not fast enough to break his new record, Misiorowski’s second pitch came in at 104.6 mph. That would have been a record in its own right, if not for his first pitch, but now the righty starter will have to settle for just the two fastest postseason pitches in MLB history.
This is the latest record that the flamethrower has added to his young résumé. Misiorowski already holds the record for the fastest pitch thrown by a starting pitcher in MLB history. That throw was registered at 105.5 mph.
Misiorowski consistently hits triple digits on the radar gun. He threw two pitches over 104 mph in the first inning. The Brewers starter threw 14 more pitches that topped 100 mph in the first.
It is no surprise that the 24-year-old also holds the record for the most 100+ mph pitches in a single game. Misiorowski had 57 such pitches against the St. Louis Cardinals on May 25, 2026.
The Milwaukee ace is expected to take home the 2026 National League Cy Young Award. It would be the first of his young career.
Misiorowski made 30 regular season starts and tallied a 16-5 record with a 1.80 ERA. He struck out 252 batters, the most in MLB, in 174 2/3 innings.