Baseball World Reacts to Jacob Misiorowski's Insane Major League Debut

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Milwaukee Brewers top prospect Jacob Misiorowski arrived in the big leagues on Thursday and announced his presence in dominant fashion, throwing five no-hit innings as the Brewers beat the St. Louis Cardinals 6-0 at American Family Field.
Misiorowski regularly hit 100 mph with his fastball and featured a 96 mph slider, striking out five.
Here's what people are saying on social media about his impressive start:
Per Rob Friedman, aka @PitchingNinja: Jacob Misiorowski, Ridiculous 92 mph changeup. Now he's just showing off.
Jacob Misiorowski, Ridiculous 92mph Changeup. 😲
— Rob Friedman (@PitchingNinja) June 13, 2025
Now he's just showing off. pic.twitter.com/DFrNBIJ1mM
Per Pitch Profiler: Jacob Misiorowski’s classifications are updated and WOW — no wonder he was being compared to deGrom!
Jacob Misiorowski’s classifications are updated and WOW — no wonder he was being compared to deGrom! pic.twitter.com/AwQKTsA4Cg
— Pitch Profiler (@pitchprofiler) June 13, 2025
Per Thomas Nestico (@TJStats):
Jacob Misiorowski made his MLB debut!
As expected, the stuff was ridiculous as he constantly blew 100+ MPH fastballs by batters and weaved his devastating breaking balls. The control a slight issue, but that doesn’t matter when he allows no hits
He’s a stud!
Jacob Misiorowski made his MLB debut!
— Thomas Nestico (@TJStats) June 13, 2025
As expected, the stuff was ridiculous as he constantly blew 100+ MPH fastballs by batters and weaved his devastating breaking balls. The control a slight issue, but that doesn’t matter when he allows no hits
He’s a stud! pic.twitter.com/xCD589j44z
From Nick Pollack aka @PitcherList:
Jacob Misiorowski already has one of the most insane four-seamers in the entire league
Jacob Misiorowski already has one of the most insane four-seamers in the entire league pic.twitter.com/ha08y6yjXZ
— Nick Pollack (@PitcherList) June 13, 2025
Misiorowski left the game after rolling his ankle, but it appears to be minor. He'll be on the mound again next week. The Brewers are now 37-33 on the season and in second place in the National League Central. The Cardinals dropped to 36-33 with the loss and are now in third.
The two teams will play again on Friday night with first pitch coming at 8:10 p.m. ET. Freddy Peralta will pitch for Milwaukee while Erick Fedde will take the ball for St. Louis.

Brady Farkas is a baseball writer for Fastball on Sports Illustrated/FanNation and the host of 'The Payoff Pitch' podcast which can be found on Apple Podcasts and Spotify. Videos on baseball also posted to YouTube. Brady has spent nearly a decade in sports talk radio and is a graduate of Oswego State University. You can follow him on Twitter @WDEVRadioBrady.