Description
Jacob Misiorowski, nicknamed “the Miz”, is an American professional baseball pitcher for the Milwaukee Brewers of Major League Baseball (MLB). He made his MLB debut in 2025.
To begin the 2025 season, Baseball America rated Misiorowski as the Brewers’ third-best prospect. The team assigned him to Triple-A Nashville, where he posted a 2.13 ERA with 80 strikeouts in 13 appearances. By June, Baseball America had Misiorowski as the 21st-best prospect in all of baseball. On June 12, he was promoted to the major leagues.
In his MLB debut, Misiorowski earned a win after throwing five innings of no-hit baseball. His start featured the fastest pitch thrown by a Brewers pitcher in the Statcast era, topping out at 102.3 miles per hour (164.6 km/h). In his second start, against the Minnesota Twins, Misiorowski threw six perfect innings, becoming the first MLB player to record 11 no-hit innings to start his career since 1961. In his third start, against Paul Skenes and the Pittsburgh Pirates, he became the first MLB pitcher since 1901 to allow five hits or fewer across his first three career starts. Misiorowski’s fifth start came against Clayton Kershaw and the Los Angeles Dodgers—the National League leader in wins at the time, bolstered by what Milwaukee’s local newspaper said was the best lineup in baseball that year. Misiorowski struck out twelve batters in six frames, including a near-immaculate inning, and induced a league-leading twenty-one swings-and-misses.
On July 11, 2025, Misiorowski was named to the National League All-Star roster as a replacement for Matthew Boyd, making him the fastest player in league history to become an All-Star after just five major league games. His selection was controversial due to his lack of experience in the majors. Misiorowski struggled after his All-Star Game appearance, getting scored on in each of his last nine appearances, where he went 1-2 with a 5.89 ERA. Misiorowski finished the regular season with a 5-3 record, a 4.36 ERA, and 87 strikeouts in 66 innings pitched. He also gained some Rookie of the Year votes, finishing 11th in National League Rookie of the Year voting.
Misiorowski was kept on the Brewers’ postseason roster and made his postseason debut in game 2 of the National League Division Series against the Chicago Cubs. Misiorowski would pitch three shutout innings, with four strikeouts and would get credit for the win in a 7-3 Brewers win. Misiorowski would also pitch in relief in the series-deciding Game 5, pitching four innings and surrendering only one run, along with three strikeouts in a 3-1 Brewers win, which Misiorowski would also get credit for. Misiorowski would finish the NLDS with a 2-0 record and a 1.29 ERA, along with seven strikeouts in seven innings pitched. Misiorowski would appear in Game 3 of the National League Championship Series against the Dodgers, pitching five innings and surrendering one earned run, while striking out nine batters, but would get hit with the loss. Misiorowski would finish the postseason with a 2-1 record and a 1.50 ERA, striking out 16 batters in 12 innings pitched.
On March 20th, 2026, the Brewers announced that Misiorowski would be the starting pitcher on Opening Day, on March 26th, against the Chicago White Sox. Misiorowski would become the youngest Brewers pitcher to start on Opening Day since Ben Sheets in 2002, and the third youngest in franchise history. Misiorowski would give up a lead-off home run to Chase Meidroth to start the game, but would shut the White Sox down for the remainder of his start, giving up only two hits and three walks while striking out 11 batters in five innings, the most ever by a Brewers pitcher on Opening Day, while getting the decision in a 14-2 Brewers win.
On May 1st, 2026, Misiorowski threw 5 1/3 hitless innings against the Washington Nationals before having to leave the game due to a right hamstring cramp. Misiorowski struck out 8 batters and walked two, and got the win in a 6-1 Brewers victory.
This 8×10 photo is hand-signed by Brewers All-Star Jacob Misiorowski, who also inscribed his number ’32’ in blue ink. Authenticity is guaranteed by an official Prova hologram on the photo.
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