Cooper Hjerpe played 1 season (2026) for STL.
Sport-specific career totals from the active profile tables, with VAL shown whenever the sport has a value file.
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MLB Advanced — ERA+ & OPS+ LeadersMLB Career Arc TypesMLB Career Dominance — top-25 in multiple all-time categoriesMLB Clutch Delta — Who Rises in OctoberMLB Compilers vs Comets — Career ShapeMLB Era-Adjusted Seasons — Greatest Seasons in Modern TermsMLB Franchise Mt. Rushmores — Four Faces of Every TeamMLB Only Club — Statistical ExclusivityMLB VAL Leaders — Value Above LeagueCareer TwinsCross-Sport Era-Adjusted Careers — The Greatest Careers, One AxisCross-Sport Era-Adjusted Seasons — The Greatest Years, One Axis
Bio, rosters, and year-by-year/career stat splits come directly from MLB's own official public StatsAPI.