Jacob Misiorowski flat-out obliterated an MLB record Saturday night, dropping a 4-seam fastball that screamed across the plate at an official 104.8 mph. This wasn’t just some random heater, folks. It was his *first pitch* of the game, and it immediately reset the bar for the fastest postseason pitch in MLB history. The broadcast thought it was 105 mph, which, honestly, felt right, but 104.8 mph is still ridiculous.
Misiorowski’s Arm Is a Record-Breaking Machine
Talk about announcing your presence with authority! That 104.8 mph rocket officially blew past Mason Miller’s 104.5 mph mark from 2025. And get this: Misiorowski’s second pitch? A casual 104.6 mph. If he hadn’t thrown that absolute opener, that second pitch would’ve been a record all its own. So now, the dude holds the two fastest postseason pitches in MLB history. It’s wild to think he’s only 24 years old and already doing this.
Triple Digits Are Just a Warm-Up for This Guy
This postseason fireball isn’t even the fastest pitch Misiorowski has thrown. He already holds the record for the fastest pitch by a starting pitcher in MLB history, clocking in at an insane 105.5 mph. He’s not just a flash in the pan either. Misiorowski consistently hits triple digits, and he proved it again by throwing two pitches over 104 mph in the first inning alone on Saturday. Oh, and he tossed 14 more pitches that topped 100 mph in that *same first inning*. It’s no shocker that he also holds the record for the most 100+ mph pitches in a single game, having unleashed 57 pitches against the St. Louis Cardinals on May 25, 2026, that cleared 100 mph. The man is just built different.
Misiorowski’s 2026 regular season stats are ridiculous, too. In 30 starts, he posted a 16-5 record with a minuscule 1.80 ERA. He punched out 252 batters in 174 2/3 innings, which was the most in all of MLB. It’s no surprise he’s the heavy favorite to take home his first NL Cy Young Award this year. With this kind of heat and consistency, you have to wonder what other records are going to fall before this postseason is over. His next start is going to be appointment viewing, that’s for sure. The league better brace itself.
This article was created with AI assistance and published under Seattle On Tap’s editorial standards. See our Editorial Policy.
Originally reported by Yahoo Sports.
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