Unhittable Brewers Rookie Jacob Misiorowski Is Putting MLB On Notice

Until the seventh inning of last night’s game, Milwaukee Brewers rookie Jacob Misiorowski was technically the most unhittable pitcher in baseball history.

Misiorowski retired the first 18 Minnesota Twins batters he faced last night. He lost his perfect game when he walked Byron Buxton to lead off the seventh, then gave up a home run to Matt Wallner before he was taken out of the game. The homer didn’t just end the no-hitter—it was the first hit the rookie allowed in more than 11 innings of work to start his career.

In his MLB debut on July 12, he allowed no hits and four walks against the St. Louis Cardinals through five innings before he rolled his ankle and had to leave the game. As per Sarah Langs of MLB.com, his 11 hitless innings to start his career broke the MLB record for a starting pitcher.

Scouting Jacob Misiorowski

If you had to pick a pitching prospect who would be the most likely to break the record for no-hit innings, it would be Misiorowski. His stuff was considered by many to be the best in the minors prior to his call-up last week. MLB.com rates him the 66th-best overall prospect in the game.

His fastball is the highlight of his scouting report, averaging 99.7 mph and touching 102. Only five pitchers have higher average fastball velocity, and all of them are short relievers. Standing at 6 foot 7, he uses his length to get an incredible 7 foot 7 inches of extension, which is the most in MLB.

He has two outstanding breaking pitches. He throws a 94.6 mph slider primarily to right-handed hitters, which is by far the hardest such pitch in the game. No other hurler averages more than 92.0 mph on a slider.

He relies on an 87.6 mph curveball to get lefties out, and only two pitchers in the game throw a faster curve. He also mixes in an occasional changeup, which has generated a swinging strike all four times he has thrown it so far.

Command And Location

With such an incredible arsenal, one might wonder why Misiorowski wasn’t considered a top ten prospect—especially considering his results over his first two outings. The knock on him is his inconsistent command, which led several preseason scouting reports to note he had risk of becoming a reliever.

While that wasn’t the case last night, he averaged 5.4 walks per nine innings in his minor-league career. In fact, he gave up more walks (140) than hits (138) in his 233 2/3 innings in the minors since he was chosen by the Brewers in the second round of the 2022 draft.

He appears to have made significant strides with his ability to locate since the start of this season. He brought his walks down to 4.4 per nine innings in Triple-A Nashville this year, and he increased his percentage of pitches in the strike zone from 46.4% in 2024 to 51.7% before his call-up. He has spotted 58.5% of pitches in the zone across his first two MLB starts.

A few weeks ago, there was pressure building for a shake-up in Milwaukee’s rotation. Jacob Misiorowski and other Nashville pitchers appeared to be better than some of the arms in the big leagues. When they called him up, the Brewers bumped out veteran Aaron Civale, necessitating a trade. The rookie has rewarded the club’s decision with an unbelievable no-hit streak, and his starts will be appointment viewing for the foreseeable future.