It didn’t take lengthy for Brewers ace Jacob Misiorowski to break a file in his first World Series look.

Misiorowski set the file for the quickest World Series pitch in the pitch-tracking period (since 2008) on his very first ball thrown during Milwaukee’s 3-2 Game 1 win of the Fall Classic on Friday — a 103.5 mph heater to Rays first baseman Yandy Diaz.

The pitch, which Diaz took for a ball above the strike zone, was listed as 103.4 mph on the scoreboards at American Family Field, but MLB’s Statcast system clocked it at 103.5 mph.

Misiorowski’s record-setting pitch beat out lefty flamethrower Aroldis Chapman’s 103.2 mph fastball for the Cubs during Game 2 of the 2016 World Series, which in the end resulted in a groundout by Cleveland outfielder Coco Crisp.

The right-hander was fastball-heavy in the first inning, beginning the sport with 10 in a row and throwing it on 11 of 13 pitches in the body, averaging a scorching 101.9 mph.

Misiorowski ended Friday’s sport with three strikeouts and gave up one earned run through 5 innings.

Misiorowski has made waves across the MLB in his first full season for his extremely excessive velocity for a beginning pitcher, throwing 1,115 pitches over 100 mph in the common season this yr.

Milwaukee Brewers pitcher Jacob Misiorowski pitches against the Tampa Bay Rays during the first inning in Game 1 of the 2026 World Series at American Family Field in Milwaukee on Oct. 23, 2026. IMAGN IMAGES via Reuters Connect

The excessive velocity has translated into success for Misiorowski, as the righty led the league in ERA (1.80) and strikeouts (252) with a 16-5 file in 30 begins.

He hasn’t let off the gasoline much in the postseason either, pitching to a 3.24 ERA with 11 strikeouts in 8 ⅓ innings in two begins headed into Friday’s sport.

Following his begin earlier this month during Game 1 of the NLCS against the Dodgers, Misiorowski opened up on the strain of beginning a postseason sport in contrast to coming out of the bullpen, which he did in the 2025 postseason.

“I think it’s different just the fact that I’m starting, that nerve of actually having the whole game and it being behind me, and it’s kind of different,” he said during an look on FOX Sports after the sport. “Coming out of the bullpen, you’re like, you get thrown in a scenario, it’s unknown. So this one’s a little completely different.

“Nerves are a little higher with the start, so nothing crazy, but that’s about it.”