When the Radar Goes to 11: Misiorowski’s Historic 105.5 MPH Fastball

Updated June 27, 2026 8 min read

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Jacob Misiorowski Throws Historic 105.5 MPH Fastball in Brewers Win Over Cubs

TL;DR: Milwaukee Brewers pitcher Jacob Misiorowski delivered one of the fastest pitches ever recorded in Major League Baseball during a 6-2 victory over the Chicago Cubs, with a fastball clocked at an astonishing 105.5 mph. The pitch ties for the third-fastest since Statcast tracking began in 2008, and Misiorowski earned his eighth win in nine decisions, further cementing his status as one of baseball’s most electrifying young arms.

Jacob Misiorowski just rewrote the upper limits of what a human arm can do on a Major League mound. The Milwaukee Brewers right-hander fired a 105.5 mph fastball during his team’s 6-2 win over the Chicago Cubs on June 26, 2026, a pitch that ties for the third-fastest ever recorded by MLB’s Statcast system since tracking began in 2008. The baseball world is still processing what it witnessed.

Quick Answer

Jacob Misiorowski threw a 105.5 mph fastball in a Milwaukee Brewers victory over the Chicago Cubs on June 26, 2026. The pitch is tied for the third-fastest since Statcast tracking began in 2008. Misiorowski improved to 8-1 in the outing, allowing just two runs while overpowering Chicago’s lineup with historically elite velocity.

How Fast Is 105.5 MPH in Context?

Reaching 105.5 mph places Misiorowski in an extraordinarily exclusive club of pitchers who have touched or exceeded 105 mph in a live MLB game. Since Statcast began tracking pitch velocity in 2008, only a handful of arms in history have reached this threshold. The pitch ties Misiorowski for the third-fastest recorded delivery, a distinction shared with a very short list that includes Aroldis Chapman, who set the all-time record at 105.8 mph.

To put this velocity into perspective, the average MLB fastball in 2026 sits around 94.0 mph. Misiorowski’s 105.5 mph offering is more than 11 mph faster than league average, a gap that compresses a hitter’s reaction time to fractions of a second. At that velocity, a pitch travels the 60 feet, 6 inches from the rubber to home plate in roughly 0.36 seconds, giving batters an almost impossibly small window to identify, track, and swing at the ball.

Statcast’s Fastest Pitches Since 2008

Rank	Pitcher	Velocity (MPH)	Year
1	Aroldis Chapman	105.8	2010
2	Aroldis Chapman	105.7	2016
3 (T)	Jacob Misiorowski	105.5	2026
3 (T)	Aroldis Chapman	105.5	2012
5	Jordan Hicks	105.3	2019

What Happened in the Brewers’ 6-2 Win Over the Cubs?

Misiorowski dominated the Chicago Cubs lineup in a performance that blended raw power with sharp command. The Brewers won the game 6-2 behind Misiorowski’s arm, and the right-hander improved his 2026 record to 8 wins against just 1 loss. That .889 winning percentage reflects a pitcher who has been nearly untouchable for most of the season.

The Cubs had few answers for Misiorowski’s arsenal. His fastball sat well above 103 mph for most of the outing, with the 105.5 mph rocket serving as the exclamation point. Chicago managed only scattered damage across his innings, and the Brewers’ offense provided enough run support to secure the comfortable victory. The game further validated what scouts and analysts have been saying for months: Misiorowski is one of the most talented young pitchers in baseball.

Who Is Jacob Misiorowski?

Jacob Misiorowski is a right-handed starting pitcher for the Milwaukee Brewers who has rapidly ascended from a promising prospect to one of the most feared arms in Major League Baseball. The Brewers selected Misiorowski in the 2022 MLB Draft, and his elite fastball velocity immediately set him apart from his peers in the minor league system.

What makes Misiorowski remarkable is not just his top-end velocity but the consistency with which he maintains it deep into games. Many pitchers who can touch 103 or 104 mph do so only in short bullpen stints. Misiorowski, by contrast, has shown the ability to sustain elite velocity while working through a lineup multiple times, a trait that separates true aces from hard throwers.

Why Does Misiorowski Throw So Fast?

Elite velocity at Misiorowski’s level is the product of several converging physical and mechanical factors. His delivery generates extraordinary rotational force through the hips and torso, transferring energy efficiently from the lower body through the arm. His arm action is compact and explosive, maximizing the whip-like acceleration that produces elite pitch speed.

According to biomechanics research, pitchers who reach 105+ mph typically exhibit above-average hip-to-shoulder separation, meaning the hips rotate open significantly before the shoulders follow. This torque creates a kinetic chain that amplifies velocity beyond what raw arm strength alone could produce. Misiorowski’s physical frame, combined with his mechanical efficiency, places him at the far extreme of this biomechanical spectrum.

What Does This Mean for the 2026 Brewers?

The Milwaukee Brewers entered the 2026 season with legitimate playoff aspirations, and Misiorowski’s emergence as a dominant front-of-rotation starter has been a primary driver of those expectations. With an 8-1 record and a pitch that touches speeds not seen in over a decade, the Brewers possess a weapon that can neutralize even the most potent lineups in October.

Industry data indicates that teams with an elite starting pitcher performing at this level are significantly more likely to advance deep into the postseason. The Brewers’ pitching depth, anchored by Misiorowski’s historic arm, gives Milwaukee a legitimate chance to compete with heavyweights like the Los Angeles Dodgers, Atlanta Braves, and Philadelphia Phillies in the National League playoff picture.

How Does 105.5 MPH Compare Across Baseball History?

While modern Statcast technology only began tracking pitches in 2008, historical accounts and older radar guns suggest that sustained 105+ mph velocities were essentially unheard of before the 21st century. The pitchers who have reached this milestone — Aroldis Chapman, Jordan Hicks, and now Jacob Misiorowski — represent the cutting edge of human athletic performance.

Research published by Dr. Glenn Fleisig and the American Sports Medicine Institute shows that pitch velocity across MLB has increased by approximately 3-4 mph over the past two decades. This trend is attributed to improved training methods, sports science, nutrition, and the increased emphasis on velocity development in amateur and professional baseball pipelines. Misiorowski’s 105.5 mph pitch sits at the apex of this decades-long escalation.

Era	Average MLB Fastball	Max Recorded Velocity
Early 2000s	~91 mph	~102 mph
2010-2015	~92.5 mph	105.8 mph (Chapman)
2016-2022	~93.5 mph	105.3 mph (Hicks)
2023-2026	~94.0 mph	105.5 mph (Misiorowski)

What Are the Risks of Throwing This Fast?

Throwing a baseball at 105.5 mph places extraordinary stress on the human body, particularly the shoulder, elbow, and forearm. Studies from the American Journal of Sports Medicine consistently show a correlation between elite velocity and increased injury risk, including ulnar collateral ligament tears that require Tommy John surgery.

However, not all high-velocity pitchers get hurt. Misiorowski’s mechanics, conditioning program, and workload management will be critical factors in determining his long-term durability. The Brewers’ training and medical staff have emphasized a data-driven approach to monitoring Misiorowski’s arm health, including biomechanical analysis, workload tracking, and recovery protocols designed to mitigate the physical toll of sustained 105+ mph pitching.

FAQs About Jacob Misiorowski’s 105.5 MPH Fastball

How fast was Jacob Misiorowski’s pitch against the Cubs?

Jacob Misiorowski’s fastest pitch against the Chicago Cubs was clocked at 105.5 mph by MLB’s Statcast tracking system. The pitch was recorded during the Brewers’ 6-2 victory on June 26, 2026.

What is the fastest pitch ever thrown in MLB?

The fastest pitch ever recorded in Major League Baseball is 105.8 mph, thrown by Aroldis Chapman of the Cincinnati Reds in 2010. Misiorowski’s 105.5 mph pitch ties for the third-fastest since Statcast tracking began in 2008.

What is Jacob Misiorowski’s record in 2026?

After the June 26 victory over the Cubs, Misiorowski improved to an 8-1 record for the 2026 season. His .889 winning percentage makes him one of the most effective pitchers in the National League this year.

How does Misiorowski compare to Aroldis Chapman’s velocity?

Misiorowski’s 105.5 mph fastball trails Chapman’s all-time record of 105.8 mph by just 0.3 mph. The two pitchers share a spot among the elite tier of arms to have reached the 105 mph threshold in a live MLB game, a distinction held by fewer than five pitchers in recorded history.

What team does Jacob Misiorowski play for?

Jacob Misiorowski pitches for the Milwaukee Brewers. He was drafted by the organization in 2022 and has developed into one of the most dominant starting pitchers in Major League Baseball by the 2026 season.

Could Misiorowski throw even faster than 105.5 mph?

Given his age, mechanical efficiency, and the upward trend in his velocity over recent seasons, it is possible Misiorowski could reach or exceed his current personal best. Pitchers often peak in velocity between ages 25 and 29, and Misiorowski is still within that window.

Key Takeaways

Jacob Misiorowski threw a 105.5 mph fastball in the Brewers’ 6-2 win over the Cubs on June 26, 2026, tying for the third-fastest pitch since Statcast tracking began in 2008.
Misiorowski improved to 8-1 on the season, establishing himself as one of the most dominant pitchers in the National League.
The pitch places Misiorowski in an exclusive group alongside Aroldis Chapman and Jordan Hicks as the only pitchers to reach 105+ mph in recorded MLB history.
The Milwaukee Brewers’ 2026 playoff hopes are significantly strengthened by Misiorowski’s elite performance and historic velocity.
Long-term durability and workload management remain important considerations for any pitcher operating at this velocity extreme.

Conclusion

Jacob Misiorowski’s 105.5 mph fastball against the Chicago Cubs is more than a radar gun curiosity. It is a defining moment in the 2026 season and a milestone in the ongoing evolution of human athletic performance on the pitcher’s mound. The pitch tied for the third-fastest since Statcast began tracking in 2008, trailing only Aroldis Chapman’s legendary efforts, and it came in the context of a dominant 8-1 season that has propelled the Milwaukee Brewers into serious playoff contention.

For the Brewers, Misiorowski represents a generational talent — a pitcher capable of overpowering lineups with velocity that very few humans in history have ever produced. For baseball fans, the sight of a pitch clocking in at 105.5 mph is a visceral reminder that the boundaries of the sport continue to expand. If Misiorowski maintains his current trajectory, the story of his arm — and the speed at which it operates — is still just beginning.