Jacob Misiorowski threw the fastest pitch on record Saturday, touching 103.7 mph in the Milwaukee Brewers' 7-1 win over the Colorado Rockies. The pitch came in the third inning against Rockies third baseman Kyle Karros and capped one of the most overpowering outings of the season.
The velocity came when a Brewers game today search was looking for proof of how high Misiorowski's ceiling can go, and the answer was a radar reading no pitcher has matched since full tracking began in 2008. He also struck out eight over seven innings, allowed one run on four hits and logged 52 pitches that reached triple digits.
For Milwaukee, the number mattered because it was not just hard, it was historic. Nobody has thrown a pitch harder than 103.7 mph since at least 2008, and it arrived in the middle of a game the Brewers controlled from start to finish. That made the night less about a single fastball than about what the 2025 All-Star can do when the raw speed turns into outs.
Pat Murphy sounded impressed, but not surprised. “Miz has got great extension and great velocity, so that doesn't surprise me,” the Brewers manager said. Then he drew the line that still matters most: “We've got to get off that — the harder the better, and all that.” Murphy said Misiorowski has to throw the ball in the zone, and throw his other pitches in the zone, too. “As I say often, good hitters can time up anything,” he said.
That is the part that keeps the story from ending with the radar gun. Misiorowski's 103.7 mph fastball was well out of the zone for a ball, and it did not get Karros out. The record pitch was devastating, but the next step for Milwaukee's young power arm is clearer than the speed reading: keep the velocity, and make hitters swing at it where he wants it.
The milestone will sit with him because it is both specific and measurable, a pitch that can be pointed to long after the win over Colorado fades. What comes next is less certain, and more important. If Misiorowski keeps pairing triple-digit heat with command, Saturday may be remembered as the night the Brewers saw not just a flamethrower, but a starter who could turn history into something repeatable.
