Hjerpe recently underwent season-ending Tommy John surgery, which is certainly notable after the 24-year-old dealt with elbow issues last season and didn't pitch after July 2.

St. Louis Cardinals No. 6 prospect, left-handed pitcher Cooper Hjerpe, recently underwent Tommy John surgery according to the team, sidelining him for the entirety of the 2025 season.

The Cardinals have taken a hit in their Minor League system after announcing that pitching prospect Cooper Hjerpe will be out of action for the rest of the season, as he has undergone the infamous ...

The Cardinals announced that pitching prospect Cooper Hjerpe has undergone Tommy John surgery. The left-hander will miss the entire 2025 season and won’t be expected back until midway through ...

CORVALLIS — It was the day before the first game of his college career, during a strategy meeting with fellow pitchers, when Oregon State Beavers left-hander Cooper Hjerpe discovered one of ...

"Cardinals announce 2022 first-round pick Cooper Hjerpe has undergone Tommy John surgery," Woo said. "He will miss the rest of the 2025 season and is expected to return midway through 2026." ...

Cooper Hjerpe pitched six innings for the Beavers allowing four hits and one run and striking out 11 as Oregon State defeated Oregon, 5-1, on Friday. LOOK: To see additional photos, point your ...