Jason Giambi is a Diamond 88 OVR First Baseman card for the Athletics, part of the Jolt set in MLB The Show's Diamond Dynasty. He bats left-handed. He is also eligible at Third Baseman and Left Fielder. The card was added to Diamond Dynasty in April 2026.

At the plate, Jason Giambi's standout tools are 105 Contact, 103 Discipline, and 87 Power. His profile leans toward contact hitting. Notable quirks include Dead Red, Breaking Ball Hitter, and Fighter from a total of 8 quirks.

Jason Giambi is eligible at 4 positions, and DiamondOps scores each one separately: Designated Hitter (84.3), First Baseman (82.4), Third Baseman (75.1), and Left Fielder (73.2) on All-Star. The best fit is Designated Hitter rather than the listed First Baseman, and that holds at every difficulty. At Designated Hitter the card scores 84.3 on All-Star, 88.5 on Hall of Fame, and 88.4 on Legend — it keeps 105% of its All-Star value at the top difficulty, which is unusually durable. Among First Basemans the card ranks #54 on Legend and #86 on All-Star.

Jason Giambi is not currently traded on the open Diamond Dynasty market — cards like this are typically earned through programs or collections rather than bought with stubs.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Jason Giambi earns an OpScore of 86.1 on Legend difficulty, ranking #700 among all cards and #54 among First Basemans.