After laying waste to radar guns across baseball during the regular season, Milwaukee Brewers ace Jacob Misiorowski needed just one pitch to make MLB playoff history on Saturday.
The 24-year-old sophomore phenom reared back and fired a 104.8 m.p.h. fastball to start the Brewers' first playoff game against the San Diego Padres, breaking the major-league record for the fastest post-season pitch since tracking began in 2008.
Misiorowski's second offering — a 104.6 m.p.h. fastball — was the second-fastest post-season pitch in the tracking era.
Mason Miller previously held the record with a 104.5 m.p.h. fastball thrown during the Padres NL wild-card series last year.
Misiorowski had a 1.50 ERA in three playoff outings with the Brewers during his 2025 rookie season, but Milwaukee was ultimately swept by the Dodgers in the NLCS.
The six-foot-seven right-hander broke the 104 m.p.h. threshold only twice in those playoffs, both in the same at-bat against Kyle Tucker, and maxed out at 104.3 m.p.h.
But somehow the fireballer's max velocity increased further this season, peaking at 105.5 m.p.h in an at-bat against National League MVP favourite Pete Crow-Armstrong. It was the fastest tracked pitch ever thrown by an MLB starter, breaking Misorowski's own record of 103.6 set earlier in the season.
Aroldis Chapman still holds the record for the fastest recorded pitch in major-league history with a 105.8 m.p.h. fastball thrown in September 2010.
2:56
1:47