Pittsburgh Pirates
Isaac Mattson has thrown 3,917 pitches that have been tracked by the PITCHf/x system between 2021 and 2026, including pitches thrown in the MLB Regular Season, The World Baseball Classic, Spring Training and Independent Leagues. In 2026, they have relied primarily on their Fourseam Fastball (94mph) and Slider (84mph), also mixing in a Change (86mph). He also rarely throws a Curve (82mph).