Stephen Kolek is a right-handed pitcher for the Kansas City Royals.

In MLB, Stephen Kolek has appeared in 71 games (213.1 IP) with a 4.13 ERA, a 1.25 WHIP, and 6.33 strikeouts per nine innings, on 150 strikeouts and 55 walks. In AAA, Stephen Kolek has appeared in 59 games (124.0 IP) with a 4.79 ERA, a 1.51 WHIP, and 8.71 strikeouts per nine innings, on 120 strikeouts and 49 walks.

Stephen Kolek's most recent tracked outing on netpitch was Jul 2, 2026 (MLB 2026).

Use the interactive dashboard above to break down Stephen Kolek's pitch mix, velocity, command, sequencing, count leverage, and damage-risk trends across every tracked MLB and AAA appearance.