Major League Baseball history was rewritten on Saturday night, as Milwaukee Brewers right-hander Jacob Misiorowski unleashed a staggering 103.7 mph fastball against the Colorado Rockies. The blistering pitch, thrown on June 6, 2026, officially stands as the fastest pitch by a starting pitcher since MLB began tracking velocity data in 2008. Dominating the mound at the notoriously hitter-friendly Coors Field, the 24-year-old ace led Milwaukee to a decisive 7-1 victory while leaving baseball fans and analysts completely stunned.
Shattering the MLB Velocity Record at Coors Field
While relief pitchers have occasionally touched similar numbers in short, high-intensity bursts, starting pitchers generally have to conserve energy to navigate through a lineup multiple times. Misiorowski threw that conventional wisdom out the window on Saturday. During the bottom of the third inning, he fired the record-breaking 103.7 mph heater low and outside to Rockies batter Kyle Karros.
The pure velocity on display wasn't an isolated event, nor did it fade as the game progressed. Over seven dominant innings, Misiorowski threw an astonishing 52 pitches at 100 mph or faster. Digging deeper into the numbers reveals an even more absurd reality: a jaw-dropping 45 of those pitches registered at 101 mph or above. He thoroughly dismantled the Colorado lineup, striking out eight batters and surrendering just one unearned run. For fans checking the weekend Brewers vs Rockies highlights, this pitching masterclass instantly became required viewing.
Pitching at Coors Field's high altitude often neutralizes breaking ball movement, forcing pitchers to rely heavily on their fastballs. Misiorowski embraced the challenge, trusting his generational arm strength to overwhelm hitters in an environment where routine fly balls frequently turn into home runs.
Statcast Pitching Records Re-Written
When analyzing the latest Statcast pitching records, the separation between Misiorowski and the rest of the league's rotation arms is growing massive. Before Saturday night, the hardest pitch thrown by a starter belonged to Misiorowski himself—a 103.4 mph fastball he delivered against the St. Louis Cardinals just two weeks earlier on May 25. In fact, the towering right-hander currently owns the 12 fastest pitches ever recorded by a starting pitcher in the modern tracking era.
While the overall MLB velocity record remains with veteran reliever Aroldis Chapman, who hit 105.8 mph out of the bullpen back in September 2010, maintaining extreme, triple-digit heat as a starter requires a vastly different level of biomechanical efficiency and stamina. The sheer volume of high-velocity pitches Misiorowski generates per start makes him an absolute anomaly in the sport.
The Evolution of a Franchise Ace
Drafted in the second round out of Crowder College back in 2022, Misiorowski's ascension through the Milwaukee system has been nothing short of spectacular. Standing at an imposing 6-foot-7, his exceptional height creates a release point and extension that makes a 100 mph pitch look significantly faster by the time it reaches the plate. Hitters aren't just dealing with raw speed; they have to adjust to a perceived velocity that practically halves their reaction time.
Following his record-breaking outing, the pitcher known affectionately as The Miz maintained a remarkably casual attitude about his historic arm talent. 'It is one of those things: It is what it is,' Misiorowski stated postgame. 'I am going to keep going, trying to get strikeouts, and if that is what it takes to get strikeouts, then so be it.'
What This Means for Milwaukee Brewers News Moving Forward
The dominant storyline dominating Milwaukee Brewers news centers almost entirely on how manager Pat Murphy plans to manage his young superstar down the stretch of the 2026 season. With the victory over Colorado, Misiorowski improved his season record to 7-2 and lowered his ERA to an elite 1.50. He is rapidly transforming from a high-upside prospect into the undisputed frontrunner for the National League Cy Young Award.
Despite the eye-popping radar gun readings, Brewers leadership remains focused on long-term development and fundamental execution. Manager Murphy acknowledged the impressive physical feat but kept his young ace grounded. 'Miz has got great extension and great velocity, so that does not surprise me,' Murphy told reporters regarding the Jacob Misiorowski 103.7 mph milestone. However, the veteran skipper emphasized that raw power alone isn't enough to secure championships. 'He has got to throw the ball in the zone and throw his other pitches in the zone. As I say often, good hitters can time up anything.'
As the summer heats up and the postseason race begins to take shape, all eyes will be on the Brewers' rotation. If Misiorowski continues to blend this unprecedented velocity with command of his secondary pitches, he won't just be rewriting the record books—he will be redefining what is physically possible for a starting pitcher in Major League Baseball.
