Roy Halladay is a Red Diamond 99 OVR Starting Pitcher card for the Phillies, part of the Field of Dreams set in MLB The Show's Diamond Dynasty. He throws right-handed. The card was added to Diamond Dynasty in August 2026.

On the mound, Roy Halladay works with a 5-pitch arsenal led by a 94 mph Sinker and a 92 mph Cutter. His pitching ratings include 90 Velocity, 99 Control, and 99 Break. The profile favors a balanced mix of command and movement. Notable quirks include Break Outlier from a total of 3 quirks.

DiamondOps grades each pitch in Roy Halladay's arsenal: Cutter (S), Sinker (S), Circle Change (A), Splitter (A), and Curveball (B). 2 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 Cutter off the Sinker, so the two share a release look. Velocity works against the card here — its 90 mph Sinker is slow enough to cost it in the arsenal score. Arsenal grades are the same at every difficulty — unlike a hitter's OpScore, a pitch mix does not re-weight as you climb.

Roy Halladay 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. Roy Halladay earns an OpScore of 89.9 on Legend difficulty, ranking #511 among all cards and #89 among Starting Pitchers.