Misiorowski reaches 102 mph, allows no hits in electric MLB debut
June 12th, 2025
MILWAUKEE -- Of course Jacob Misiorowski’s first pitch in the Major Leagues was a fastball. It found the strike zone at 100.5 mph, making it the second-fastest fastball thrown by a Brewers starter in the pitch-tracking era, just a few clicks below Trevor Megill’s 100.7 mph as an opener in 2023.
That mark didn’t take long to fall. Misiorowski’s second pitch was 101.8 mph. His fifth pitch was 102.2 mph. His 78th pitch was 101.1 mph to complete a fifth hitless inning.
But in the sixth, while making his 81st pitch, Misiorowski (Brewers No. 4 prospect, MLB No. 68) felt his right quadriceps and calf cramp. As if that wasn't enough, he turned his right ankle after the follow-through, and while Misiorowski and the Brewers quelled any concern about those ailments impeding his next start, it made for an unsatisfying ending to a remarkable introduction for the 23-year-old, 6-foot-7 flamethrower in Thursday night’s 6-0 win over the Cardinals at American Family Field.
“Of course I don’t want to leave like that. I felt like I could have kept going,” Misiorowski said. “I cramped up, and stuff happens. I saw the picture and it looks bad, but it feels good, it feels great.”
For most of the night, it was great.
“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.”
Making Milwaukee’s most highly anticipated pitching debut since at least 2017, when Josh Hader started slinging fastballs out of the bullpen, or perhaps as far back as the day Olympic hero Ben Sheets arrived in 2001, Misiorowski worked five-plus innings without allowing a hit or a run, worked around four walks and struck out five before his abrupt exit in an outing that was every bit as electric as advertised from the very first pitch.
By night’s end, he had fired 14 pitches at 100.0 mph and above, the fourth most by a starter in an MLB debut in the pitch-tracking era. Before Thursday, all of the Brewers’ starters had thrown eight triple-digit pitches in that time, and six of them belonged to Megill as an opener. The only true starters to do it both registered exactly 100.0 mph with exactly one pitch: Wily Peralta in 2013 and Brandon Woodruff in '19.
MILWAUKEE -- Of course Jacob Misiorowski’s first pitch in the Major Leagues was a fastball. It found the strike zone at 100.5 mph, making it the second-fastest fastball thrown by a Brewers starter in the pitch-tracking era, just a few clicks below Trevor Megill’s 100.7 mph as an opener in 2023.
That mark didn’t take long to fall. Misiorowski’s second pitch was 101.8 mph. His fifth pitch was 102.2 mph. His 78th pitch was 101.1 mph to complete a fifth hitless inning.
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But in the sixth, while making his 81st pitch, Misiorowski (Brewers No. 4 prospect, MLB No. 68) felt his right quadriceps and calf cramp. As if that wasn't enough, he turned his right ankle after the follow-through, and while Misiorowski and the Brewers quelled any concern about those ailments impeding his next start, it made for an unsatisfying ending to a remarkable introduction for the 23-year-old, 6-foot-7 flamethrower in Thursday night’s 6-0 win over the Cardinals at American Family Field.
“Of course I don’t want to leave like that. I felt like I could have kept going,” Misiorowski said. “I cramped up, and stuff happens. I saw the picture and it looks bad, but it feels good, it feels great.”
For most of the night, it was great.
“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.”
Jacob Misiorowski on his MLB debut
Jun 12, 2025 · 1:30
Jacob Misiorowski on his MLB debut
Making Milwaukee’s most highly anticipated pitching debut since at least 2017, when Josh Hader started slinging fastballs out of the bullpen, or perhaps as far back as the day Olympic hero Ben Sheets arrived in 2001, Misiorowski worked five-plus innings without allowing a hit or a run, worked around four walks and struck out five before his abrupt exit in an outing that was every bit as electric as advertised from the very first pitch.
By night’s end, he had fired 14 pitches at 100.0 mph and above, the fourth most by a starter in an MLB debut in the pitch-tracking era. Before Thursday, all of the Brewers’ starters had thrown eight triple-digit pitches in that time, and six of them belonged to Megill as an opener. The only true starters to do it both registered exactly 100.0 mph with exactly one pitch: Wily Peralta in 2013 and Brandon Woodruff in '19.
Then came The Miz.
“It’s just incredible pitches coming at you,” said catcher William Contreras, who helped calm Misiorowski when a crowd of 27,687 stirred as the duo walked in from the bullpen. “I know that the velo is there going into it, but it definitely surprises you when you see it consistently coming in 101, 102 [mph]. After that, he had to lock in and not try to do too much. Just pitch.”
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