Matt Krook is a Common 55 OVR Relief Pitcher card for the Free Agents, part of the Live set in MLB The Show's Diamond Dynasty. He throws left-handed. The card was added to Diamond Dynasty in June 2026.

On the mound, Matt Krook works with a 4-pitch arsenal led by a 92 mph Sinker and a 85 mph Cutter. His pitching ratings include 76 Velocity, 51 Control, and 57 Break. The profile favors a balanced mix of command and movement.

DiamondOps grades each pitch in Matt Krook's arsenal: Sinker (S), Sweeper (S), Cutter (S), 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 Sinker off the Sweeper, so the two share a release look. Velocity works against the card here — its 76 mph Sinker 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, Matt Krook currently buys for about 7 stubs, with sell orders near 0 stubs. Over the past 7 days the buy price has climbed roughly 17%. Its quick-sell value of 5 stubs sits at or above the sell price, making it quick-sell viable. DiamondOps suggests waiting for a better entry point.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Matt Krook earns an OpScore of 47.5 on Legend difficulty, ranking #2902 among all cards and #624 among Relief Pitchers.