Jacob Misiorowski

Who Is Jacob Misiorowski?

Jacob Misiorowski, often nicknamed “The Miz,” is a right-handed starting pitcher for the Milwaukee Brewers. He attended Grain Valley High School in Missouri, went undrafted out of high school, and developed at Crowder College in Neosho, Missouri. Milwaukee selected him with the 63rd overall pick in the second round of the 2022 MLB Draft, and he signed for a reported $2.35 million bonus.

Misiorowski’s physical profile is central to his appeal. At 6 feet 7 inches and 201 pounds, he generates unusual extension toward home plate, effectively releasing the ball closer to the batter than most pitchers. Combined with an elite four-seam fastball and high spin characteristics, that extension makes his velocity particularly difficult to time. MLB’s Statcast profile lists him as a right-handed thrower and batter, standing 6 feet 7 inches tall.

• Elite velocity: his four-seam fastball averaged 100.5 mph in the 2026 regular season, according to ESPN.
• Rapid development: he debuted in June 2025 and became an All-Star after only five MLB starts.
• Starter conversion: after beginning his MLB career as a high-octane reliever, he became a full-time starter in 2026.
• Postseason impact: he started Game 1 of the NLDS, NLCS, and World Series for Milwaukee in 2026.

Misiorowski’s path is notable because it was not a straightforward route through a major college programme. He initially committed to Oklahoma State, but changes connected to the COVID-19 pandemic affected his scholarship situation. He chose the junior-college route at Crowder, where his velocity development accelerated, and that decision helped position him for the 2022 draft.

Jacob Misiorowski’s 2026 Breakout Season

Jacob Misiorowski’s 2026 regular season was one of the most dominant pitching performances in MLB. In 30 starts, he went 16–5 with a 1.80 ERA, 252 strikeouts, and a 0.80 WHIP across 174⅔ innings. Those figures led MLB among qualified starters in ERA, strikeouts, and WHIP, according to MLB.com, ESPN, and Baseball Savant.

The numbers are remarkable not simply because they are strong, but because they came in his first full major-league season. He held opponents to a .157 batting average, .224 on-base percentage, and .246 slugging percentage. His strikeout rate equated to 13.0 strikeouts per nine innings, also leading MLB. These results placed him among the leading candidates for the National League Cy Young Award.

His WHIP—walks plus hits per inning pitched—was especially striking. A 0.80 WHIP means Misiorowski allowed fewer than one baserunner per inning on average, reflecting both his ability to miss bats and his capacity to limit traffic. ESPN reported that this was the lowest WHIP by a major-league starter since Pedro Martínez in 2000, although such historical comparisons should be understood as context rather than a definitive measure of overall greatness.

Misiorowski also showed he could sustain dominance over a complete game. MLB reported that he flirted with perfection in a one-hit, 15-strikeout shutout against the Philadelphia Phillies. He also touched 105.5 mph against the Chicago Cubs, illustrating the ceiling of his fastball. Those performances demonstrate why Milwaukee viewed him as more than a short-term relief option.

How Jacob Misiorowski’s Fastball Works

Jacob Misiorowski’s four-seam fastball is the foundation of his success. In 2026, he threw it approximately 60 percent of the time, more than any other MLB starter, and generated swings and misses on 40 percent of those fastballs, according to reporting on his season. That combination of volume and effectiveness is rare because hitters usually adjust when a pitcher relies heavily on one pitch.

His fastball works because it combines velocity, extension, spin, and location. A 100 mph fastball is difficult in itself, but Misiorowski’s height and release point make the ball appear to arrive more quickly. When he locates the pitch at the top of the strike zone, hitters can swing underneath it; when he elevates it, it can produce weak contact or called strikes.

Why hitters find him difficult

• Late movement: high spin and extension can make the fastball seem to rise through the zone.
• Release-point advantage: his height helps the ball travel on a flatter, more deceptive path.
• Strikeout potential: batters must respect the fastball, which can make his secondary pitches more effective.
• Pressure on opponents: even when he does not record a strikeout, hard contact becomes harder to produce.

However, velocity alone does not guarantee success. Misiorowski’s 2025 debut season showed the challenges involved in transitioning from a power arm to a reliable major-league pitcher. He finished that year 5–3 with a 4.36 ERA and 87 strikeouts in 66 innings. The improvement in 2026 suggests better command, sequencing, and physical conditioning, but young power pitchers still need to manage workload, opponent adjustments, and the physical demands of starting every fifth day.

For viewers, the most useful way to watch Misiorowski is to focus on his fastball location rather than only its speed. When he can consistently elevate the pitch or locate it at the top edge of the zone, his other pitches become more dangerous. When his command slips, hitters can lay off borderline fastballs and force him into longer counts.

Jacob Misiorowski in the 2026 World Series

Jacob Misiorowski entered the 2026 World Series as one of Milwaukee’s most important players. The Brewers faced the Tampa Bay Rays in a best-of-seven series beginning on 23 October 2026. Misiorowski started Game 1 at American Family Field and delivered five innings of one-run baseball, allowing four hits and one walk while striking out three. Milwaukee won 3–2, giving him his first career postseason victory.

MLB reported that Misiorowski opened the game with a 103.5 mph four-seam fastball to Yandy Díaz, setting a new velocity standard for the first pitch of a World Series game in the pitch-tracking era. While his strikeout total was lower than his regular-season standard, the start demonstrated an important skill for a young ace: competing effectively when elite stuff alone does not produce easy outs.

His postseason workload was also notable. MLB listed him with three postseason appearances, a 1–0 record, 2.70 ERA, 13⅓ innings, 14 strikeouts, and a 1.35 WHIP through the early World Series. He had started Game 1 of the National League Division Series against the San Diego Padres, Game 1 of the National League Championship Series against the Los Angeles Dodgers, and Game 1 of the World Series against Tampa Bay.

That sequence made Misiorowski only the second pitcher aged 24 or younger to start Game 1 of a Division Series, Championship Series, and World Series in the same postseason, joining Cole Hamels in 2008. It is a historical milestone, but it also highlights Milwaukee’s confidence in him. Starting a postseason opener places a pitcher at the centre of the team’s strategic plan, particularly against opponents capable of exploiting mistakes.

For Cardiff fans watching overnight, Misiorowski’s starts offer a clear reason to tune in. His fastball can change the shape of an at-bat instantly, and his ability to work through a lineup repeatedly is the key test of his development. The World Series also provides a useful reminder that baseball outcomes depend on team context: Milwaukee’s bullpen, defence, and offence all influence whether a strong start becomes a win.

What Comes Next for Jacob Misiorowski?

Jacob Misiorowski’s future depends on sustaining health, command, and durability. His 2026 workload of 188 regular-season and postseason innings was reported as his highest professional total by more than 47 innings. That increase is a positive sign of his ability to handle a starter’s role, but teams typically monitor young pitchers carefully as their innings totals rise.

The next stage of his development will likely focus on refining secondary pitches, maintaining fastball command deep into games, and adjusting as opponents build more extensive scouting reports. A pitcher who relies heavily on a fastball can remain elite, but he needs enough variation to prevent hitters from sitting on one pitch. Misiorowski’s ability to adapt will determine whether his 2026 season becomes a foundation for sustained excellence.

• Workload management: his increased innings total makes recovery and durability important areas to watch.
• Pitch mix: continued development of secondary offerings will help him handle lineups multiple times.
• Command under pressure: postseason lineups will keep testing his ability to locate high-velocity pitches.
• Awards context: his 2026 season made him a leading NL Cy Young Award candidate, though awards are decided after the season.

It is also important to avoid overreacting to a single season. Misiorowski’s 2026 numbers were extraordinary, but baseball history includes many pitchers who produced one outstanding year before injuries, adjustments, or inconsistency changed their trajectory. The fairest assessment is that he has established himself as one of baseball’s most exciting young starters, while his long-term standing will depend on what follows.

For new fans, Misiorowski is an accessible player to follow because his strengths are visible without advanced statistics. Watch the fastball, observe how often hitters make solid contact, and notice how Milwaukee uses its bullpen after he exits. Those simple observations explain much of why he became such a central figure in the Brewers’ 2026 season.

Frequently Asked Questions

This Jacob Misiorowski guide gives Cardiff readers and international baseball fans a clear view of his rise, pitching strengths, 2026 achievements, and World Series importance.