Joe Mantiply is a Common 64 OVR Relief Pitcher card for the Free Agents, 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, Joe Mantiply works with a 4-pitch arsenal led by a 89 mph Sinker and a 89 mph 4-Seam Fastball. His pitching ratings include 59 Velocity, 72 Control, and 99 Break. The profile favors a movement-heavy arsenal built to miss bats.

On the Diamond Dynasty market, Joe Mantiply currently buys for about 7 stubs, with sell orders near 0 stubs. Over the past 7 days the buy price has fallen roughly 53%. Its quick-sell value of 2 stubs sits at or above the sell price, making it quick-sell viable. DiamondOps currently rates the card a buy at this price.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Joe Mantiply earns an OpScore of 57.1 on Legend difficulty, ranking #1683 among all cards and #297 among Relief Pitchers.