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Cooper Hjerpe Strikes Out Six in MLB Debut Win

9/7/2026

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Summary

Cooper Hjerpe Dominates Debut

Cooper Hjerpe threw four perfect innings in his MLB debut, earning the win over Colorado.
He struck out six batters on 54 pitches, delivering 41 strikes.
After two elbow surgeries and a Tommy John procedure, he posted a 0.95 ERA and 1.42 WHIP in Triple-A Memphis.
Manager Oliver Marmol plans to keep Hjerpe on a starter’s schedule, capping his 2024 workload at 85 pitches.

Summary

Moniak Sparks Victory

Mickey Moniak hit his 22nd homer, a 436-foot blast, giving Colorado a 5-1 lead.
Jake McCarthy hit a 435-foot solo homer in the eighth, narrowing the Cardinals' lead to 10-6.
Pinch-hitter Zac Veen delivered a clutch single in the seventh after being hit by a pitch.
The game featured 17 of 18 combined runs scored with two outs, highlighting late-inning volatility.

History

Historical Context

After Hideo Nomo broke into the Dodgers on May 2 1995—leading the National League with 236 strikeouts and igniting “Nomomania”—MLB clubs began scouting Japan and limiting rookie workloads. Cooper Hjerpe’s six-strikeout, 54-pitch debut for the St. Louis Cardinals reflects that same cautious approach, now standard after the 1994-95 strike era’s emphasis on pitcher health.

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Cooper Hjerpe Dominates Debut

Cooper Hjerpe threw four perfect innings in his MLB debut, earning the win over Colorado.
He struck out six batters on 54 pitches, delivering 41 strikes.
After two elbow surgeries and a Tommy John procedure, he posted a 0.95 ERA and 1.42 WHIP in Triple-A Memphis.
Manager Oliver Marmol plans to keep Hjerpe on a starter’s schedule, capping his 2024 workload at 85 pitches.

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