Marcus Semien

Marcus Semien is a Silver 78 OVR Second Baseman card for the Mets, part of the Live set in MLB The Show's Diamond Dynasty. He bats right-handed. The card was added to Diamond Dynasty in April 2026.

At the plate, Marcus Semien's standout tools are 95 Fielding. His profile leans toward defense in the field.

Marcus Semien is eligible at 2 positions, and DiamondOps scores each one separately: Second Baseman (66.2) and Designated Hitter (57.1) on All-Star. The card is strongest at its listed position, Second Baseman, at every difficulty. At Second Baseman the card scores 66.2 on All-Star, 68.7 on Hall of Fame, and 69.6 on Legend — it keeps 105% of its All-Star value at the top difficulty, which is unusually durable. Among Second Basemans the card ranks #88 on All-Star and #94 on Legend.

On the Diamond Dynasty market, Marcus Semien currently buys for about 210 stubs, with sell orders near 126 stubs. Over the past 7 days the buy price has climbed roughly 8%. Flipping at current buy and sell prices nets roughly 61 stubs, about a 48% return. DiamondOps suggests waiting for a better entry point.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Marcus Semien earns an OpScore of 69.6 on Legend difficulty, ranking #1391 among all cards and #94 among Second Basemans.

Live Series cards like Marcus Semien's are the ones Diamond Radar scores: it reads a player's real MLB production and predicts what the next roster update will do to the card — the predicted rating, the tier jump, and how likely the upgrade is. Ratings only move at a roster update, and not every Live Series card is scored in a given window. Across the season so far, 55% of the cards Radar flags go on to be upgraded, against a 26% background rate across all scored cards — 2.1× better than chance (n=1,061).