Brewers' flamethrowing rookie fires 103.7 mph fastball, setting the fastest pitch by a starter in 18 years.

Milwaukee Brewers 24-year-old right-hander Jacob Misiorowski keeps rewriting MLB records with his phenomenal fastball. Starting today's away game against the Colorado Rockies, he not only threw a 103.7 mph (approx. 166.9 km/h) fastball, setting the fastest pitch by a starting pitcher since the introduction of pitch tracking in 2008, but also delivered a quality start of seven innings allowing only one unearned run, leading the Brewers to a 7-1 victory.

Misiorowski pitched seven innings in this game, allowing four hits, striking out eight, walking three, and giving up just one unearned run, lowering his ERA to 1.50.

Even more astonishing, over his last seven starts totaling 45.1 innings, he has allowed only one earned run, posting a microscopic 0.20 ERA. This is the lowest ERA by any MLB pitcher over a span of at least 30 innings in seven consecutive starts since legendary pitcher Bob Gibson's 0.14 ERA from June 6 to July 6, 1968.

This young flamethrower sets new velocity records almost every time he takes the mound, and this game was no exception. In the third inning against Rockies hitter Kyle Karros, Misiorowski fired a low outside-corner fastball at 103.7 mph, becoming the fastest pitch thrown by a starter since comprehensive pitch-tracking began in 2008. His previous personal best was 103.4 mph against the St. Louis Cardinals on May 25.

In fact, the 12 fastest pitches thrown by any MLB starter this season all belong to Misiorowski. In this game, he threw 52 pitches at 100 mph or more, second only to his own record of 57 in one game on May 25; among them, 45 pitches reached 101 mph or higher, setting a new MLB record in the pitch-tracking era.

In the second inning, Misiorowski struck out Rockies catcher Hunter Goodman with a 103.1 mph fastball, the fourth-fastest pitch ever recorded by a starter for a strikeout in the pitch-tracking era. The three fastest strikeout pitches also belong to Misiorowski from earlier this season, with the fastest being 103.4 mph on May 25.

Misiorowski also encountered a scary moment during the game. In the second inning, Troy Johnston hit a hard grounder toward the pitcher, which appeared to strike Misiorowski on his left lower leg, resulting in an infield single. After a trainer came out to check on him, Misiorowski threw some warm-up pitches and remained in the game without leaving early.

He ran into trouble in the sixth inning, first allowing an infield single to Jake McCarthy, then a wild pitch moved the runner to second. He then hit Tyler Freeman in the helmet with a 98.2 mph cutter, forcing Freeman to leave the game, though Freeman was able to walk off under his own power. Misiorowski got TJ Rumfield to fly out, then walked Goodman to load the bases, but he induced Johnston to fly out to left and got Ezequiel Tovar to ground out to second, escaping the jam.

In the seventh inning, Misiorowski once again faced baserunner pressure but escaped with strikeouts, retiring McCarthy and Sterlin Thompson in succession. His final pitch of the game was a 101.3 mph fastball to Thompson, who watched strike three go by, putting the exclamation point on his blazing performance.

What makes this even more impressive is that the game took place at Coors Field, a hitter's paradise. This ballpark, known for its high altitude and thin air that favors hitters, makes it difficult for pitchers to dominate, yet Misiorowski still conquered the Rockies lineup with his overpowering stuff and command.