Jacob Misiorowski Sets World Series Velocity Record With 103.5 MPH Fastball

Jacob Misiorowski broke the record for the fastest pitch in World Series history with a 103.5 mph fastball during the Milwaukee Brewers' 3-2 victory over the Tampa Bay Rays.

Jacob Misiorowski threw a 103.5 mph fastball to Tampa Bay Rays hitter Yandy Díaz on Friday night, setting a new record for the fastest pitch in World Series history. The 24-year-old Milwaukee Brewers right-hander surpassed the previous mark of 103.2 mph set by Aroldis Chapman in 2016. Misiorowski earned the win in the 3-2 Brewers victory, allowing one run and four hits while striking out three batters over five innings of work.

The record-breaking pitch was the first offering of the Fall Classic and was clocked at 103.5 mph by MLB's Statcast system, though stadium video boards displayed it at 103.4 mph. Misiorowski reached triple digits on 38 of his pitches, eclipsing Chapman's 2016 record of 24 pitches at 100 mph or faster in a single Series game. The Brewers starter threw 30 pitches at 101 mph or higher, including 11 at 102 mph or more and three that reached at least 103 mph.

Tampa Bay’s lone run against Misiorowski occurred in the fourth inning. Jonathan Aranda drew a walk, moved to third base on a double by Junior Caminero, and scored via a groundout by Liam Hicks to first baseman Jake Bauers. Despite the high velocity, Misiorowski recorded seven swing-and-misses, five of which came on his fastball.

Prior to this start, Misiorowski established the all-time postseason velocity record on Oct. 3 during the NLDS opener, throwing a 104.8 mph strike to Fernando Tatis Jr. During the 2026 regular season, he threw 1,115 pitches at 100 mph or faster, nearly doubling the previous single-season record of 673 held by Jordan Hicks. His career-high velocity remains a 105.5 mph delivery thrown against the Chicago Cubs on June 27.