Each season in MLB brings a fresh wave of talent, with young stars stepping into the spotlight and making their mark. This year, the name is Jacob Misiorowski, the electrifying right-hander for the Brewers. With a blazing fastball, towering presence on the mound, and a fierce competitive edge, he’s quickly shaping up to be one of the breakout sensations of the year.

At just 23 years old, Misiorowski has already captured the imagination of Brewers fans and turned heads across the league. On June 12, Misiorowski made his major league debut, and he proved why he’s here. In his MLB debut against the Cardinals, he delivered five hitless innings, showcasing the poise of a veteran and the stuff of a future ace.

Now, as the league begins to take notice, it’s the perfect moment to trace the journey that brought Jacob Misiorowski to this stage.

Who is Jacob Misiorowski? All to know about him, his parents, and more

For the unversed, Jacob Misiorowski grew up in Grain Valley, Missouri. And he played high school ball at Grain Valley High. As a junior, he put up some impressive numbers. A 9–2 record with a 1.48 ERA, and earned All-State honors. Initially, Misiorowski had committed to play college baseball at Oklahoma State. But he later changed course and chose to start his college career at Crowder College instead.

His freshman year was mostly a wash as he only pitched in two games before redshirting. However, during that time, he made the decision to transfer to LSU for the rest of his college eligibility. He started his journey to the biggest stage. This month, when Misiorowski made his debut, his parents, Tom and Crystal Misiorowski, were right there in the stands cheering him on.

What’s encouraging is that they, along with a group, made the 7-hour road trip from Missouri to watch his first game in the big leagues. A moment they weren’t going to miss. So, they went to a local print shop in Grain Valley (on Friday) and got customized shirts with “Here for the Miz” printed on them. Cute, isn’t it? While speaking with a media outlet, Momma Crystal informed, “I went to a local print shop….(and said) I need to get these shirts printed and I need to do it kind of quick…. I called them up on Tuesday morning. I said, ‘Hey, can you print that like today? Because I’m leaving tomorrow.” The hurry, eagerness, and wait, all emotions ran through Misiorowski’s parents’ veins.

When they finally got it, they rushed to support their son’s relentless work ethic. After all, for Cherry, “Jacob is an amazing kid (who has) worked very hard for this.” She also revealed that Misiorowski “likes the Midwest,” its pitching lab, and the atmosphere. So, for him, “This is one of his dream teams,” where the athlete could prove what he can do!

A dream MLB debut: A look at Misiorowski’s baseball journey

Well, Misiorowski’s journey to the biggest stage was nothing short of a dream. It started when the Brewers picked up Misiorowski with the 63rd overall selection in the 2022 MLB Draft. Well, they surely believed in his potential and went all-out to get him. For starters, the Brewers signed him for a hefty $2.35 million bonus, well above the $1.1 million slot value for that pick! You know a talent is elite when the suitors such aggressive to get him.

Now, heading into the 2025 season, the hype around Misiorowski only grew. Baseball America ranked him as the Brewers’ No. 3 prospect. And when he finally got the call-up, the anticipation was sky-high. So, making his debut against the Cardinals, he didn’t just meet expectations, he blew them away. Misiorowski pitched five no-hit innings, becoming just the ninth pitcher since 1901 to toss at least five no-hit frames in their MLB debut!

What’s even more eye-popping is what Jacob Misiorowski did in his second start, this time against the Twins. On Friday night, he was sitting at 100–101 mph throughout the outing and averaging 100.4 mph on his fastball. And it’s not just the heater that’s turning heads. Misiorowski’s 95–96 mph slider is unlike anything the game has seen.

Misiorowski on the mound: A hit 2025 season so far

Yes, you can call it a hit season for Misiorowski. He just kicked off his MLB career last month, and he’s already making serious waves. For the unversed, in an incredible start, he threw 11 straight no-hit innings, more than any other starting pitcher has managed at the beginning of their career since way back in 1900. Over his first five starts with the Brewers, he’s put together a 4–1 record with a 2.81 ERA, and that’s pretty impressive for a rookie.

Misiorowski made his debut on June 12, 2025, and wasted no time grabbing attention. Facing the Cardinals, he fired five no-hit innings, lighting up the radar gun before leaving early with leg cramps. Then, in his next outing, he one-upped himself with six more hitless innings against the Twins. That 11-inning streak set a modern-era MLB record.

However, what really sets him apart, though, is the heat he brings. Misiorowski is averaging 99.3 mph on his fastball, and he’s already thrown 89 pitches that hit 100 mph or more. That kind of power, combined with his early success, has made him one of the most exciting young arms in the game right now.

All-star appearance and the controversy around it: Is it genuine?

Well, Jacob Misiorowski’s selection to the 2025 MLB All-Star Game has ignited controversy across the league, with many questioning whether a pitcher with just five major league starts and under 26 innings pitched deserves such an honor. So yeah, his rapid rise broke the record for the least experienced player ever named to an All-Star Game, surpassing even Paul Skenes’ previous record of 11 games. While his numbers are promising, critics argue the sample size is simply too small to justify his inclusion.

Moreover, the backlash intensified due to perceived snubs of more established players. This includes Phillies pitchers Christopher Sanchez (7–2, 2.59 ERA in 107 ⅔ innings) and Ranger Suarez (1.94 ERA in 83 ⅔ innings). On the other hand, some defended the decision. Dodgers manager Dave Roberts, who is managing the NL team, emphasized that the All-Star Game is ultimately about the fans and entertainment. He argued that Misiorowski’s ability to throw over 100 mph brings excitement to the game.

So, amid all these debates, we think All-Star was always about a clash of the best in the league, and that definition of best is subjective. In terms of best in 2025, Misiorowski can be included, but then what about the names that offered better figures than his? On the other hand, All-Star is also for the fans who want to witness the most hyped stars under one roof. Then again, Misiorowski is eligible. But the history of legacy players starring in the All-Star game is getting diluted.

So, if you thought Paul Skenes had the most dominant debut in recent memory, there’s a new name in the conversation now. Misiorowski is here, and he’s coming in hot, literally. While it is too early to conclude on a young talent, Misiorowski’s debut placed him as a stallion for the long race. Let’s now wait and watch what’s coming from the lad.