Mason Miller is one of the hardest throwers in baseball.
And on Wednesday, he threw the hardest fastball ever recorded in an MLB postseason game.
The pitch from the San Diego Padres’ star reliever came in at 104.5 miles per hour.
According to MLB Network’s Sarah Langs, it was the fastest pitch in the playoffs in the pitch tracking era (since 2008). And given the improvements in velocity through the years, it’s highly unlikely anyone before 2008 was throwing 104.5.
The pitch by Miller was even more absurd for its location. It couldn’t have been placed on the low-outside corner any better than where he threw it.
104 MPH 🔥
Mason Miller is bringing the heat pitching on back-to-back days! #Postseason pic.twitter.com/S6TyC8G3iB
— MLB (@MLB) October 1, 2025
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The Padres paid a steep price to get Miller before the MLB trade deadline.
For Miller to pay off, this season and in the rest of his contract, he needs to pitch up to his full potential. He needs to eventually be allowed to thrive in the closer role, too.
But for now, Miller is showing it doesn’t matter what inning he’s given. He can get guys out in a way that nobody ever has before.
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