Mason Montgomery is a Red Diamond 97 OVR Relief Pitcher card for the Pirates, part of the Spotlight set in MLB The Show's Diamond Dynasty. He throws left-handed. The card was added to Diamond Dynasty in August 2026.

On the mound, Mason Montgomery works with a 5-pitch arsenal led by a 99 mph 4-Seam Fastball and a 95 mph Sinker. His pitching ratings include 99 Velocity, 67 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 Mason Montgomery's arsenal: Slider (S), 4-Seam Fastball (S), Sinker (S), Circle Change (A), and 12-6 Curve (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 Sinker, so the two share a release look. Its 99 mph 4-Seam Fastball adds a velocity bonus on top. 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, Mason Montgomery currently buys for about 14,420 stubs, with sell orders near 12,520 stubs. Over the past 7 days the buy price has climbed roughly 20%. Flipping at current buy and sell prices nets roughly 456 stubs, about a 4% return. DiamondOps suggests waiting for a better entry point.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Mason Montgomery earns an OpScore of 104.1 on Legend difficulty, ranking #56 among all cards and #2 among Relief Pitchers.