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Cooper Hjerpe Undergoes Tommy John Surgery
St. Louis Cardinals pitching prospect Cooper Hjerpe (elbow) underwent Tommy John surgery and has been transferred from the 7-day injured list to the full-season injured list. According to the team, the left-hander is expected to return mid-season 2026. The 24-year-old was limited to just 52 innings of work last season due to numerous innings and will now face an extended absence. Across his 52 innings, Hjerpe spent time with High-A and Double-A. With High-A Peoria, the former 22nd overall pick posted a 3.35 ERA with a 1.19 WHIP. Then, during his first 14 2/3 innings with Double-A, the Oregon State product posted a strong 3.07 ERA with a 0.95 WHIP. Hjerpe is currently considered the No. 6 prospect in the system on MLB Pipeline and will likely not make his MLB debut until 2027 due to the injury.
Source: St. Louis Cardinals
Source: St. Louis Cardinals
