Marcus Semien is a Diamond 88 OVR Second Baseman card for the Mets, part of the New Threads 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 90 Fielding, 85 Vision, and 80 Power. His profile leans toward defense in the field. Notable quirks include Breaking Ball Hitter from a total of 3 quirks.

Marcus Semien is eligible at 2 positions, and DiamondOps scores each one separately: Second Baseman (82.6) and Designated Hitter (78.8) on All-Star. The card is strongest at its listed position, Second Baseman, at every difficulty. At Second Baseman the card scores 82.6 on All-Star, 85.9 on Hall of Fame, and 88.2 on Legend — it keeps 107% of its All-Star value at the top difficulty, which is unusually durable. Among Second Basemans the card ranks #50 on Legend and #53 on Hall of Fame.

On the Diamond Dynasty market, Marcus Semien currently buys for about 3,881 stubs, with sell orders near 2,750 stubs. Over the past 7 days the buy price has climbed roughly 15%. Flipping at current buy and sell prices nets roughly 741 stubs, about a 27% 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 88.2 on Legend difficulty, ranking #589 among all cards and #50 among Second Basemans.