Jacob Misiorowski, better known in the clubhouse as "The Miz", has transformed from a lanky high school prospect into the Milwaukee Brewers' ace who is rewriting the playbook on pitching velocity.
Standing at 6‑foot‑1 with an unusually long frame, Misiorowski entered his freshman year as a skinny teenager whose fastball barely cracked 82 miles per hour. By the following spring his radar gun was flashing 88 mph, a jump that caught the eye of scouts across the Midwest.
During his junior season he dazzled at the Junior Sun Belt Classic, hitting 94 mph and later posting a 1.48 ERA with 67 strikeouts in 47 innings. The performance earned him a Missouri Class 5 Second‑Team All‑State nod and a reputation as one of the most promising arms in the state.
A torn meniscus forced him to miss his first year at Crowder College, but the setback only sharpened his resolve. At Crowder he bulked up, focusing on strength in his lower half, and surged to 96‑99 mph, even touching 100 mph as a sophomore. He went 10‑0 with a 2.72 ERA and 136 strikeouts in 76 innings, propelling him to the 63rd overall pick in the 2024 draft by the Brewers.
Misiorowski made his major‑league debut on June 12, 2025, tossing five no‑hit innings and unleashing a 102.3 mph fastball that left batters flailing. He finished the season 5‑3 with a 4.36 ERA and 87 strikeouts in 66 innings, earning a spot on the All‑Star roster.
In 2026 the right‑hander has taken his game to another level, posting a 10‑4 record, a 1.62 ERA and a league‑leading 167 strikeouts in 111 innings. His fastball has reached 105.5 mph, the fastest pitch recorded by a starter since tracking began in 2008, underscoring the impact of his strength regimen.
The Physical Edge Behind the Numbers
Coaches attribute his meteoric rise to a combination of natural talent and a disciplined regimen that emphasizes lower‑body power. Pitching coach Brian Driskell has highlighted the importance of strength training in adding roughly 15 pounds of muscle while preserving flexibility.
The Brewers’ front office in Milwaukee views the young star as the centerpiece of a rotation that could dominate the National League for years. General manager Aaron Ashby has emphasized the club’s long‑term vision, positioning Misiorowski as a cornerstone.
Off the mound, Misiorowski remains grounded in the small towns that shaped him — Grain Valley and Neosho, Missouri — while also embracing the global stage. His story reflects a broader narrative of perseverance, from the dusty fields of Kansas City’s high school circuits to the bright lights of MLB.