Jacob Misiorowski sets record for fastest postseason pitch in MLB history

Jacob Misiorowski recorded a fastball at 104.8 mph on his first pitch during the postseason game for the Milwaukee Brewers on October 4, 2026. The pitch surpassed the previous postseason record of 104.5 mph set by Mason Miller in 2025. Misiorowski’s second pitch also reached 104.6 mph, marking the two fastest postseason pitches in MLB history. The 24-year-old ace has already established himself with multiple records, including the fastest pitch thrown by a starting pitcher in MLB history at 105.5 mph and the most 100+ mph pitches in a single game with 57 against the St. Louis Cardinals. Misiorowski is a frontrunner for the 2026 NL Cy Young Award, having achieved a 16-5 record with a 1.80 ERA in the regular season.

• 1:11 AMYahoo Sports — Jacob Misiorowski sets yet another record, this time for the fastest postseason pitch in MLB history
• 1:11 AMYahoo Sports — Brewers' Jacob Misiorowski sets yet another record, this time for the fastest postseason pitch in MLB history