Jacob Misiorowski completed a 9-inning shutout with 15 strikeouts against the Philadelphia Phillies on June 12, 2026, throwing just 95 pitches and facing the minimum 27 batters while allowing only one hit that was erased on a double play [1, 2, 3, 4, 5, 6]. Misiorowski set a new mark for the fastest pitch by a starting pitcher, hitting 104.5 mph (about 168 km/h), the fastest recorded for a starter since pitch tracking began in 2008 [1, 3, 7, 4, 5, 6]. Although Aroldis Chapman holds the overall MLB record with a 105.8 mph pitch in 2010, Misiorowski’s performance marked the fastest by any starter [7].
Misiorowski's 15 strikeouts in a game thrown with fewer than 100 pitches, known as a Maddux, set a new MLB record, surpassing the previous top strikeout totals of 13 in such games [2, 4, 6]. The 15 strikeouts also tie him for the second highest single-game strikeout total in Milwaukee Brewers history behind Ben Sheets' 18 in 2004 [6]. He threw 58 pitches over 100 mph during the game, including 31 exceeding 102 mph, setting MLB records for the highest number of such fastballs thrown in a starter's game [2, 4, 8, 5].
In the first inning, Misiorowski struck out Phillies stars Kyle Schwarber, Trea Turner, and Bryce Harper on pitches exceeding 103 mph [1, 3, 4, 8, 5, 6]. Despite not feeling in top form before the game, he relied on maximum effort to dominate, saying, "說實話，第一局前幾個打席，我覺得自己投得並不好，我當時只是在心裡祈禱他們快點揮棒。" ("Honestly, in the first few at-bats, I didn't feel I was pitching well; I just prayed they would swing quickly.") [8]. Brewers catcher William Contreras remarked, "我覺得他就算連投100顆速球，也能把比賽投完。" ("I think he could throw 100 fastballs and still finish the game.") [8].
Brewers manager Pat Murphy praised Misiorowski as "Amazing. Amazing young man. He really is. Forrest Gump-like. Amazingly real. Naive to a lot of things. It's beautiful. He just goes out and lets it eat." [2]. After the win, Misiorowski improved to 8-0 on the season with a 1.34 ERA, helping the Brewers to a 42-25 overall record [2, 4, 5].
Milwaukee next schedules Misiorowski's start on June 18, where he will look to extend his winning streak and continue his record-setting performances.
