Cooper Austin Hjerpe (born March 16, 2001) is an American professional baseball pitcher in the St. Louis Cardinals organization.
In 2020, Hjerpe's freshman year at Oregon State, he made six relief appearances and went 1–1 with a 5.25 ERA before the season was cancelled due to the COVID-19 pandemic.
[7] On March 22, he was named Pac-12 Pitcher of the Week for the second time in his career after pitching seven innings and giving up one hit while striking out 12 in a 21–0 win versus the Arizona State Sun Devils.
[11][12] Hjerpe was scheduled to start the first game of Oregon State's Super Regional versus Auburn University, but was scratched due to an undisclosed illness.
[13] He pitched in Game 2 of the Super Regional and passed former Oregon State pitcher Luke Heimlich for the school record for most strikeouts in a season with 161.