MILWAUKEE — Right-hander Jacob Misiorowski delivered an electric pitching debut Thursday night, touching 102.2 mph and throwing five no-hit innings for the Milwaukee Brewers before exiting with cramps and a minor ankle injury.
Misiorowski, 23, retired the St. Louis Cardinals without allowing a hit through five-plus innings in a 6–0 win at American Family Field. The 6-foot-7 rookie opened his Major League career with a 100.5 mph fastball, followed by a 101.8 mph heater. His fifth pitch hit 102.2 mph, and his 78th pitch — his last completed one of the night — registered 101.1 mph, as reported by the MLB.
The fourth-ranked prospect in the Brewers’ system, and No. 68 overall per MLB Pipeline, Misiorowski threw 14 pitches at 100 mph or above. That total is the fourth-most by a starting pitcher in a Major League debut during the pitch-tracking era. Prior to Thursday, Brewers starters had combined for just eight total triple-digit pitches in that same span. (RELATED: Brewers Push Forward with Pride Night Celebration)
“I’ve been playing this day out in my head forever,” Misiorowski said. “I thought I was going to give up a few hits, get your welcome to The Show. But I kind of rolled with it, and now we’re here.”
The outing ended in the sixth inning when Misiorowski cramped up in his right quadriceps and calf during his 81st pitch. He also appeared to tweak his right ankle on the follow-through. Trainers and manager Pat Murphy quickly pulled him from the game. Postgame, both Misiorowski and the club downplayed any concerns.
“I cramped up, and stuff happens,” Misiorowski said. “I saw the picture and it looks bad, but it feels good. It feels great.”
The hard-throwing righty allowed no runs, walked four, and struck out five in his highly anticipated debut, which drew comparisons to previous marquee pitching arrivals in Milwaukee, including Josh Hader in 2017 and Ben Sheets in 2001.
Catcher William Contreras said Misiorowski handled the moment well.
“I know the velo is there going into it, but it definitely surprises you when you see it consistently coming in 101, 102,” Contreras said. “After that, he had to lock in and not try to do too much. Just pitch.”
Misiorowski entered the game with a 2.13 ERA and 80 strikeouts over 63 1/3 innings at Triple-A Nashville. Drafted by Milwaukee in the second round in 2022 out of Crowder College (Mo.), he faced a Cardinals team he grew up watching in the Kansas City area. (RELATED: Milwaukee Scrambles to Fund the Hop Streetcar After Federal Aid Expires)
Roughly 30 relatives and friends—including his parents, grandparents, girlfriend and high school coach—were in attendance wearing shirts reading, “Here for The Miz.”
The Brewers will evaluate Misiorowski over the coming days before determining when he will make his next start. Early indications suggest the club is optimistic he will remain on schedule.