Cooper Hjerpe

Cooper Hjerpe is a Red Diamond 97 OVR Relief Pitcher card for the Cardinals, part of the Topps Now set in MLB The Show's Diamond Dynasty. He throws left-handed. The card was added to Diamond Dynasty in September 2026.

On the mound, Cooper Hjerpe works with a 4-pitch arsenal led by a 91 mph 4-Seam Fastball and a 87 mph Cutter. His pitching ratings include 55 Velocity, 76 Control, and 99 Break. The profile favors a movement-heavy arsenal built to miss bats. Notable quirks include Stopper and Break Outlier from a total of 4 quirks.

DiamondOps grades each pitch in Cooper Hjerpe's arsenal: 4-Seam Fastball (S), Sweeper (S), Cutter (S), and Circle Change (A). 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 Sweeper, so the two share a release look. Velocity works against the card here — its 55 mph 4-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 5,667 stubs, with sell orders near 5,000 stubs. Over the past 6 days the buy price has fallen roughly 22%. Flipping at current buy and sell prices nets roughly 98 stubs, about a 2% return. DiamondOps currently rates the card a buy at this price.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Cooper Hjerpe earns an OpScore of 95.3 on Legend difficulty, ranking #352 among all cards and #14 among Relief Pitchers.