When Jacob Misiorowski took the mound on Thursday for Opening Day, the Milwaukee Brewers' ace wouldn't just be chasing a victory.

He'd be seeking an $100,000 charity donation from Pat McAfee. All he had to do is throw really, really fast -- 104 miles per hour, to be specific.

Misiorowski joined McAfee's show earlier in the week, and the former NFL punter told Misiorowski that he'd donate $100,000 to charity if the young hurler reached that immense velocity with his fastball.

We will donate $100,000 if you hit 104 mph on Thursday, @Jmisiorowski9 #PMSLive pic.twitter.com/qoRgxEwYf4

— Pat McAfee (@PatMcAfeeShow) March 24, 2026

Misiorowski throws as hard as any starting pitcher in the game. But touching 104 MPH in March? That certainly seems amibitious.

We kept track below just how close Misiorowski is getting to that special mark.

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How fast did Jacob Misiorowski throw today?

Misiorowski topped out at 101.1 MPH.

Apparently, he wasn't getting near his maximum this early in the season.

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Jacob Misiorowski velocity updates for Pat McAfee donation

Final stats

Misiorowski went 5.0 innings. He allowed 2 hits, 1 run, 3 walks and struck out 11.

After giving up a leadoff home run, he didn't give up another run, and only one more hit.

Fifth inning

- Misiorowski threw a pitch 99.8 MPH to get a popout to end the fifth. He still hasn't hit 100 since the first.

He also joined this list:

Under-24 MLB Pitchers With 10+ Opening Day Ks:

Bob Feller (1939)
Herb Score (1957)
Don Drysdale (1960)
Gary Bell (1960)
Gary Nolan (1969)
Félix Hernández (2007)
Jacob Misiorowski (2026) 🔥🔥🔥 pic.twitter.com/JbZKzkaqYF

— Codify (@CodifyBaseball) March 26, 2026

Fourth inning

- Misiorowski works another scoreless frame. He hasn't hit 100 MPH since the first inning, though.

Third inning

- It's a scoreless third for the young fireballer. But his fastball was settled into the upper-90s. Doesn't seem like 104 is in the mix.

Second inning

- Misiorowski worked a scoreless second, getting around a walk to Munetaka Murakami. He topped out at 99 MPH.

First inning

- Good news: Misiorowski hit 101.1 MPH in the first at bat. The problem is that at bat ended with a Chase Meidroth leadoff homer.

- Misiorowski ended with that 101.1 MPH fastest pitch and the one run allowed in the first.

Pregame

- Of note: Misiorowski is the third-youngest pitcher to ever make an Opening Day start for the Brewers.

- This will be the second game of the day, beginning at 2:15 p.m. ET (1:15 p.m. CT).

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