Cooper Hjerpe is a Common 56 OVR Relief Pitcher card for the Cardinals, part of the Live set in MLB The Show's Diamond Dynasty. He throws left-handed. The card was added to Diamond Dynasty in April 2026.

On the mound, Cooper Hjerpe works with a 5-pitch arsenal led by a 93 mph 4-Seam Fastball and a 91 mph 2-Seam Fastball. His pitching ratings include 67 Velocity, 52 Control, and 57 Break. The profile favors a balanced mix of command and movement.

DiamondOps grades each pitch in Cooper Hjerpe's arsenal: Slider (S), 4-Seam Fastball (S), 2-Seam Fastball (S), Curveball (B), and Changeup (B). 3 of them grade S-tier, which is what separates a genuine out-pitch mix from a deep-but-flat arsenal. Its strongest tunnel pairing is the 4-Seam Fastball off the 2-Seam Fastball, so the two share a release look. Velocity works against the card here — its 67 mph 2-Seam Fastball is slow enough to cost it in the arsenal score. Arsenal grades are the same at every difficulty — unlike a hitter's OpScore, a pitch mix does not re-weight as you climb.

On the Diamond Dynasty market, Cooper Hjerpe currently buys for about 65 stubs, with sell orders near 0 stubs. Over the past 7 days the buy price has climbed roughly 210%. Its quick-sell value of 5 stubs sits at or above the sell price, making it quick-sell viable. DiamondOps flags the card as currently overpriced.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Cooper Hjerpe earns an OpScore of 51.5 on Legend difficulty, ranking #2616 among all cards and #508 among Relief Pitchers.