Jacob Misiorowski Autographed & Inscribed 2026 Official MLB Baseball

Five no-hit innings. 102.2 on the gun. One date Milwaukee will never forget.

June 12, 2025. American Family Field. Jacob Misiorowski's first three pitches as a Major Leaguer all cleared 100 mph. Minutes into the game he touched 102.2 — the fastest pitch by a Brewers starter since pitch tracking began — and by the time he left the mound, St. Louis still didn't have a hit. Five no-hit innings. Five strikeouts. A 6–0 Milwaukee win. He became just the tenth pitcher since 1891 to throw five or more hitless innings in his big-league debut.

This baseball puts that date in your hands.

Misiorowski personally hand-signed this Rawlings Official Major League Baseball in blue ink and added the inscription "MLB Debut 06/12/25" in his own hand — permanently tying his autograph to the night his career began. An autograph tells you who signed. A debut inscription tells you when everything started.

Signed. Witnessed. Certified.

Jacob Misiorowski is an LGC SportsGraphing Exclusive Athlete, and this ball was signed at a private signing with a PROVA authenticator in the room. A PROVA SmarTag was applied to the ball as it was signed, and a PROVA Witnessed Certificate of Authenticity is included — provenance documented from the moment pen met leather.

Details

• Rawlings Official Major League Baseball
• Hand-signed by Jacob Misiorowski in blue ink
• Hand-inscribed "MLB Debut 06/12/25"
• PROVA SmarTag applied at the signing
• PROVA Witnessed Certificate of Authenticity included
• Jacob Misiorowski is an LGC SportsGraphing Exclusive Athlete

He has since been named an All-Star in each of his first two seasons and thrown the fastest pitch ever recorded by a starting pitcher. Careers like that make the starting line matter more every year — and this ball is the starting line.

Autograph position, size and pressure vary.