Jacob Misiorowski continues to revolutionize the Major Leagues. The young Milwaukee Brewers pitcher recorded a fastball of 103.7 miles per hour (166.9 km/h) this Saturday during the game against the Colorado Rockies, setting the mark for the fastest pitch thrown by a starting pitcher since the MLB began officially tracking pitch speed in 2008.
The historic fastball came in the third inning against Kyle Karros and surpassed Misiorowski’s own previous mark, who had reached 103.4 mph on May 25 against the St. Louis Cardinals.
A dominant performance against Colorado
Beyond the speed record, the 24-year-old right-hander once again exhibited absolute dominance from the mound. Misiorowski went seven innings, allowing only one unearned run and striking out eight batters to lower his ERA to an impressive 1.50.
His arsenal of power once again took center stage. During the game he threw 52 pitches of at least 100 mph, including 45 pitches that exceeded 101 mph, a number never before seen for a starter in the Major Leagues.
The owner of the fastest pitches among starters
The feat is not an isolated event. Misiorowski currently holds the 12 fastest pitches recorded by a starting pitcher since official velocity measurements have been available.
In addition, on May 25 he set another record when he made 57 pitches of 100 mph or more in a single start, establishing himself as one of the most explosive arms modern baseball has seen.
A Cy Young candidate who continues to surprise
The 2026 season is turning Jacob Misiorowski into one of the great MLB stories. His combination of extreme speed, control and ability to dominate opposing hitters has placed him among the leading candidates for the National League Cy Young Award.
As the Brewers dream of a deep playoff run, the young pitcher continues to push the boundaries of what seems possible for a starter in professional baseball. At just 24 years old, Misiorowski isn’t just winning games: He’s rewriting the Major League record books.
