Miller struck out the first eight batters he faced in the 2025 postseason -- three in Game 1 and five in Game 2, including the 104.5 mph strikeout of Kelly -- before hitting Michael Busch on the lower leg with two outs in the eighth to end the streak. And if you go back to the end of the regular season? Miller struck out 11 batters in a row.

The Padres reliever threw the fastest recorded pitch in the postseason in Statcast history during San Diego’s 3-0 win over the Cubs in Game 2 of the National League Wild Card Series. Miller reached 104.5 mph with a four-seam fastball to Carson Kelly, striking him out for the second out in the bottom of the seventh at Wrigley Field.

One of the biggest moves of the 2025 MLB trade deadline was the San Diego Padres landing Mason Miller from the Athletics. Miller demonstrated why on Wednesday. On his ninth pitch against the Chicago Cubs in Game 2 of their wild-card series,

Mason Miller’s 104.5 mph four-seamer was not only the fastest of his career, it was the fastest postseason pitch by any player since the start of the pitch-tracking era in 2008.

From the Bronx to the radar gun, the Yankees’ arms have launched heaters that stun batters and fans alike—blazing speed that defines the thrill of every at-bat and reveals who throws the fastest pitch for New York.

The Cleveland Guardians kicked off the action by slugging their way to a Game 3 against the Detroit Tigers, followed by the San Diego Padres keeping their season alive with a shutout of the Chicago Cubs. The New York Yankees were the third team of the day to tie their series by eking out a win over the Boston Red Sox.