Jacob "Miz" Misiorowski, the 24-year-old Milwaukee Brewers ace, threw the fastest pitch of the 2026 regular season at 105.5 mph on June 27 against the Cubs — the fastest by a starter in the pitch-tracking era and the third-fastest pitch ever tracked by Statcast (behind only Aroldis Chapman's 105.8 in 2010 and a couple of others). He then threw the fastest postseason pitch on record (104.8 mph on his first pitch of the NLDS vs. San Diego) and the fastest World Series pitch ever (103.5 mph), breaking records previously held by Mason Miller and Aroldis Chapman. The Brewers went on to win the 2026 World Series.
Misiorowski spent the entire year shattering velocity benchmarks. He owns 140 of the 143 pitches of 103+ mph ever thrown by a starter in the Statcast era. The Brewers' staff as a whole — including Abner Uribe (101), Antonio Senzatela (100), and Trevor Megill (99) — pushed team velocity numbers to historic highs. The Game 1 NLDS matchup against the Padres recorded an average fastball velocity of 98.5 mph, the highest of any game since tracking began in 2008, with an overall average of 95.3 mph across all 301 pitches.
MLB did publish a 2026 compilation of each team's fastest pitch. Jacob Misiorowski of Milwaukee threw the fastest four-seam fastball of the season at 105.5 mph, ahead of Ben Joyce (104.5) and Mason Miller (104.0). Caption ("always supporting his guy") accompanies a video or photo; no factual assertion to check. POST 2118123630236418339: NOCLAIM Hyperbole about pre-snap formations; subjective, not checkable. POST 2118119684952482195: NOCLAIM The post frames LaMelo Ball as facing the Houston Rockets but then lists the matchup as "Wolves/Rockets." LaMelo Ball is a Hornets guard, not a Timberwolf, so the framing is internally inconsistent. The stat line (34 PTS, 6 3PM) and Rockets' 7-1 record are small, unverified details; not worth treating as a checkable claim here. POST 2118123341559332991:
Shohei Ohtani was born July 5, 1994, in Ōshū, Iwate, Japan.
LA hundred and five point five miles an hour. The fastest pitch in the 2026 season, from Jacob Misiorowski of Milwaukee.
MA hundred and five point five? As a starter? That's not supposed to happen.
LJacob Misiorowski, Milwaukee Brewers. He threw that at 105.5 this season. Fastest four-seam fastball in the 2026 compilation.
MSo Misiorowski was throwing gas nobody's ever seen from a rotation guy. That's a story.
LBut here's the part that gets me: his first pitch of the NLDS was one-oh-four point eight. Fastest postseason pitch on record.
MSo he saves the really hard stuff for October. Lovely.
LAnd his first World Series pitch? Around one-oh-three. He's throwing harder in the biggest moments.
MOkay, I'm impressed, but let's talk about what this means for the sport. Arms are falling off left and right.
LOh, here we go. The old 'pitch to contact' sermon.
MI'm serious! Every team tells these kids to max out every pitch, and then they're on the shelf for eighteen months with a torn UCL.
LBut Misiorowski is doing it as a starter and staying healthy. He just carried a rotation through a World Series run. That's the future.
MFor one season! He's twenty-four. Chapman threw one-oh-five point eight back in 2010 as a closer. Where's he now?
LChapman was a reliever. This is a guy going six, seven innings with that velo. That's a completely different animal.
MAnd you think that's sustainable? Throw a hundred and five for two hundred innings a year? Good luck.
LThat's exactly my point: he doesn't need to do it every pitch. He sits ninety-eight, ninety-nine, and when he needs it, he reaches back for one-oh-five.
MOh, so now he's a crafty veteran who saves his bullets. I thought he was a max-effort monster.
LHe's both! That's what makes him the best pitcher in baseball right now. He's throwing heat nobody can touch.
MBest pitcher? He's had one great year. One. I need to see it again before I put him over guys who've done it for five straight seasons.
LName one pitcher who's thrown one-oh-five in the World Series and won. Go ahead.
MThat's a cheap argument. It's one season. The Brewers had a great run, but let's not pretend he's the next Koufax yet.
LI'm not pretending. I'm looking at the radar gun. You can keep your 'wait and wait' takes. I'll take the guy who just did it.
MFine. It was a hell of a season. But I'll bet you a beer he doesn't throw one-oh-five again next year.
LYou're on. And I'll drink it while he's starting the All-Star Game.
MMoving on. gretz on X posted a list of the most dominant MLB postseason runs, and the top two are both eleven and one.
LThe 2005 White Sox and the 1999 Yankees. Both lost exactly one game in the entire playoffs. Which one was more impressive?
MYou bring it, you answer it. Which side are you on?
LThe 2005 White Sox. They swept the World Series and ended an eighty-eight-year championship drought. That's pressure.
MThe 1999 Yankees swept the World Series too, against a Braves team with three Hall of Fame pitchers. That's a tougher opponent.
LBut the Yankees were a dynasty. They were supposed to win. The White Sox came out of nowhere with four straight complete games in the ALCS. That's dominance.
MFour complete games? In 2005? That's the opposite of today's game. That's why I respect that run more.
LSo we're agreeing? That's no fun.
MNo, I'm saying the White Sox were more dominant because they didn't rely on max-effort velocity. They pitched to contact and won it all. That's the argument we just had.
LSo now you're using my own story against me. Fine. I'll still take Misiorowski over any of those guys.
MAnd I'll take the 2005 White Sox staff over any modern rotation. They won eleven of twelve without throwing one-oh-five.
LThe game evolves. Misiorowski is the evolution.
MAnd the 2005 White Sox proved you don't need the evolution to win a World Series. Agree to disagree.
LFine. But if you need me, I'll be watching the hardest throwers on the planet.
MAnd I'll be watching the guys who can pitch seven innings without a radar gun. Different strokes.