Stephen Kolek is a Bronze 72 OVR Starting Pitcher card for the Free Agents, part of the Live set in MLB The Show's Diamond Dynasty. He throws right-handed. The card was added to Diamond Dynasty in April 2026.

On the mound, Stephen Kolek works with a 5-pitch arsenal led by a 94 mph 4-Seam Fastball and a 94 mph Sinker. His pitching ratings include 90 Velocity, 40 Control, and 85 Break. The profile favors a movement-heavy arsenal built to miss bats. Notable quirks include Break Outlier from a total of 2 quirks.

DiamondOps grades each pitch in Stephen Kolek's arsenal: Slider (S), 4-Seam Fastball (S), Sinker (S), Cutter (S), and Circle Change (A). 4 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 4-Seam Fastball 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.

On the Diamond Dynasty market, Stephen Kolek currently buys for about 26 stubs, with sell orders near 0 stubs. Over the past 7 days the buy price has fallen roughly 7%. Its quick-sell value of 25 stubs sits at or above the sell price, making it quick-sell viable. DiamondOps suggests waiting for a better entry point.

OpScore is DiamondOps' composite rating of a card's in-game performance value. Stephen Kolek earns an OpScore of 61.9 on Legend difficulty, ranking #1729 among all cards and #377 among Starting Pitchers.