Mason Olson is a left-handed pitcher for the New Hampshire Fisher Cats.

In AAA, Mason Olson has appeared in 2 games (6.1 IP) with a 2.84 ERA, a 1.58 WHIP, and 8.53 strikeouts per nine innings, on 6 strikeouts and 4 walks.

Mason Olson's most recent tracked outing on netpitch was Jul 31, 2026 (AAA 2026).

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