The Fastest Fastball in Baseball Isn't a Highlight. It's a Habit.
Milwaukee owns the best record in baseball — 73-44, three and a half games clear of anyone else in the sport — and most nights the reason is a lineup that doesn't stop. Tonight the reason wears No. 32. Jacob Misiorowski's four-seamer is averaging 100.6 mph this season — not his top gear, his average — the hardest fastball thrown by any starting pitcher in the league, and he leans on it 63.7% of the time.
The rest of the line matches the pitch. Misiorowski carries a 1.63 ERA and a 5.1 FanGraphs WAR through 127 innings — a pace that projects past 12 wins above replacement over a full season — with a 40.6% strikeout rate and a 2.8% barrel rate allowed, meaning hitters aren't just missing the pitch, they're barely squaring up the ones they do put in play. The four-seamer alone draws a whiff 42.3% of the time it's thrown.
He's 24, in his second full big-league summer — he debuted June 12, 2025, and threw 66 innings with a 4.36 ERA that first year before this jump. Minnesota sends Connor Prielipp, a live young left arm in his own right (9.4 K/9, 88.8% ground-ball rate) for a Twins club stuck at 58-60 and looking for a version of tonight's story to call its own. The gap between "promising" and what Milwaukee's getting right now is the whole game.