Seth Martinez is a Bronze 66 OVR Relief Pitcher card for the Red Sox, part of the Live set in MLB The Show's Diamond Dynasty. He throws right-handed. The card was added to Diamond Dynasty in August 2026.

On the mound, Seth Martinez works with a 5-pitch arsenal led by a 90 mph 4-Seam Fastball and a 89 mph Sinker. His pitching ratings include 58 Velocity, 51 Control, and 70 Break. The profile favors a movement-heavy arsenal built to miss bats.

DiamondOps grades each pitch in Seth Martinez's arsenal: Sweeper (S), 4-Seam Fastball (S), Cutter (S), Sinker (S), and Circle Change (A). 4 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 Sinker, so the two share a release look. Velocity works against the card here — its 58 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, Seth Martinez currently buys for about 227 stubs, with sell orders near 26 stubs. Over the past 2 days the buy price has fallen roughly 16%. Flipping at current buy and sell prices nets roughly 176 stubs, about a 652% return. DiamondOps suggests waiting for a better entry point.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Seth Martinez earns an OpScore of 60.5 on Legend difficulty, ranking #1821 among all cards and #275 among Relief Pitchers.