Diego Castillo is a right-handed pitcher for the Round Rock Express.

In MLB, Diego Castillo has appeared in 2 games (2.0 IP) with a 36.00 ERA, a 4.50 WHIP, and 4.50 strikeouts per nine innings, on 1 strikeouts and 3 walks. In AAA, Diego Castillo has appeared in 3 games (2.2 IP) with a 16.88 ERA, a 3.38 WHIP, and 0.00 strikeouts per nine innings, on 0 strikeouts and 6 walks.

Diego Castillo's most recent tracked outing on netpitch was Jun 18, 2026 (AAA 2026).

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