Brewers' Jacob Misiorowski sets yet another record, this time for the fastest postseason pitch in MLB history

Jacob Misiorowski wasted no time setting yet another MLB record on Saturday.

The Milwaukee Brewers' ace lit up the radar gun on his first pitch of the postseason, throwing a four-seam fastball that registered 104.8 mph to open Game 1 of the NLDS against the San Diego Padres. The broadcast had it at 105 mph, but the official ruling was just slightly slower.

This set a postseason record, surpassing Mason Miller's 104.5-mph mark from 2025.

While not fast enough to break his new record, Misiorowski's second pitch came in at 104.6 mph. That means the righty now has the two fastest postseason pitches in MLB history (since pitch tracking started in 2008).

The Brewers' ace threw 14 more pitches that topped 100 mph in the first.

Misiorowski finished with a no-decision. He pitched four innings and allowed two earned runs on four hits. The starter walked one and struck out six. Misiorowski threw 88 pitches, but 58 came in the first two innings.

Misiorowski holds the record for the fastest pitch thrown by a starting pitcher in MLB history. He registered 105.5 mph in June .

The 24-year-old also holds the record for the most 100-plus-mph pitches thrown in a single game. He had 57 such pitches against the St. Louis Cardinals on May 25.

The Milwaukee ace is expected to take home the 2026 National League Cy Young Award. It would be the first of his young career.

Misiorowski made 30 regular-season starts for the Brewers and tallied a 16-5 record with a 1.80 ERA. He struck out 252 batters, the most in MLB, across 174 2/3 innings.