Jacob Misiorowski is one start away from putting his name in the Milwaukee Brewers record book.
The right-hander is set to take the mound once more in the 2026 regular season, and if he gets through Sunday’s finale against the St. Louis Cardinals without a meltdown, he’ll finish with the best single-season ERA in franchise history. At the moment, Misiorowski is sitting on a ridiculous 1.86 ERA across 169 1/3 innings, and the mark he’s chasing belongs to Mike Caldwell, whose 2.36 ERA from 1978 has stood as the Brewers’ standard for decades.
The gap is so wide that it would take something extreme to knock Misiorowski off course. Even if he were to allow 10 earned runs and fail to record an out on Sunday, his ERA would still climb only to 2.39. In other words, the record is there for the taking, and Milwaukee could also remove him early if the outing starts to go sideways.
That would push Caldwell out of the top spot and give the Brewers a new single-season ERA leader - a place Misiorowski has put himself ahead of pitchers like Freddy Peralta, Corbin Burnes and Brandon Woodruff, none of whom reached this point in a Milwaukee uniform. Burnes even won a Cy Young Award for the Brewers, and his season still didn’t come close to what Misiorowski has done in 2026.
Across baseball, only a few pitchers have stayed anywhere near him. Cam Schlittler of the New York Yankees has the closest ERA overall at 1.94, while the nearest National League challenger is Chris Sale at 2.16.
Misiorowski was already one of the sport’s most talked-about arms last year, when he burst into the majors with an elite fastball and reached the All-Star Game faster than most people expected. This season, he has taken another huge step and turned into the most dominant pitcher in the league.
He opened the year on the mound for the Brewers on Opening Day, and now the 24-year-old is poised to close it with history hanging over the final start. When the season began, the question was whether his overpowering stuff could hold up over a full year.
He has answered that and then some. Milwaukee has every reason to feel fortunate, and if the Brewers make a deep run, Misiorowski is going to be a major reason why.
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