Mark Leiter Jr. is a right-handed pitcher for the Athletics.

In MLB, Mark Leiter Jr. has appeared in 303 games (383.0 IP) with a 4.61 ERA, a 1.33 WHIP, and 10.08 strikeouts per nine innings, on 429 strikeouts and 141 walks. In AAA, Mark Leiter Jr. has appeared in 50 games (169.1 IP) with a 3.83 ERA, a 1.13 WHIP, and 11.16 strikeouts per nine innings, on 210 strikeouts and 48 walks.

Mark Leiter Jr.'s most recent tracked outing on netpitch was Jul 18, 2026 (MLB 2026).

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