Merrill Kelly is a right-handed pitcher for the Arizona Diamondbacks.

In MLB, Merrill Kelly has appeared in 187 games (1095.0 IP) with a 3.92 ERA, a 1.23 WHIP, and 7.92 strikeouts per nine innings, on 964 strikeouts and 335 walks. In AAA, Merrill Kelly has appeared in 44 games (203.2 IP) with a 2.87 ERA, a 1.26 WHIP, and 7.95 strikeouts per nine innings, on 180 strikeouts and 73 walks.

Merrill Kelly's most recent tracked outing on netpitch was Jul 4, 2026 (MLB 2026).

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