Reiver Sanmartin is a Common 57 OVR Relief Pitcher card for the Giants, 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, Reiver Sanmartin works with a 4-pitch arsenal led by a 91 mph 4-Seam Fastball and a 90 mph Sinker. His pitching ratings include 69 Velocity, 56 Control, and 99 Break. The profile favors a movement-heavy arsenal built to miss bats.

On the Diamond Dynasty market, Reiver Sanmartin currently buys for about 16 stubs, with sell orders near 0 stubs. Over the past 7 days the buy price has climbed roughly 157%. Its quick-sell value of 2 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. Reiver Sanmartin earns an OpScore of 52.3 on Legend difficulty, ranking #2065 among all cards and #408 among Relief Pitchers.