2 days ago
Brewers' Jacob Misiorowski dazzles in debut, exits with cramping
MILWAUKEE — Jacob Misiorowski arrived exactly as advertised in his long-awaited major-league debut Thursday night. The Brewers' flamethrowing to prospect hurled five innings of no-hit ball against the St. Louis Cardinals, walking four and striking out five, but departed the game alongside a trainer in the bottom of the sixth.
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Misiorowski appeared to have rolled his ankle, though his exit was ultimately attributed to right calf and quad cramping.
The 23-year-old, who ranked 87th overall in The Athletic's Keith Law's top 100 preseason prospect rankings, rose through the minor-league system thanks to his powerful triple-digit velocity. He can routinely throw pitches over 1oo mph, and has been one of the hardest throwing pitchers in the minor-league circuit since he was drafted in the second round of the 2022 draft.
That's what he brought to the show, with the first three pitches of his major-league career tapping out at over 100 mph. The fifth pitch of his career — a 102.2 mile per hour fastball to Lars Nootbaar — was the hardest-thrown pitch by a Brewers starter in the pitch-tracking era, which dates back to 2008.
Of his 81 total pitches thrown, 14 were recorded at 100 mph or higher.
MUST SEE: Jacob Misiorowski's first three pitches to start his Major League career:
100 MPH 🔥102 MPH 🔥101 MPH 🔥
— MLB (@MLB) June 12, 2025
Misiorowski, who was called up from Triple A Nashville on Tuesday, came out for the bottom of the sixth inning after a lengthy break in which the Brewers scored five runs off Cardinals' starter Sonny Gray. He fell behind 3-0 to Victor Scott II to lead off the inning, and seemingly rolled his right ankle retreating back to the mound. After a brief meeting with manager Pat Murphy, pitching coach Chris Hook and the medical staff, Misiorowski left the game. The crowd at American Family Field gave him a standing ovation as he departed the field.
Misiorowski became the third major-league pitcher since 1900 to record at least five innings without allowing a hit in his MLB debut, joining Los Angeles Dodgers Emmet Sheehan (six innings, 2023) and New York Giants Red Ames (five innings, 1903).
