Isaac Mattson

Isaac Mattson: live stats, tool grades and Baseball Things scouting coverage of the Mariners pitcher.

About Isaac Mattson

Isaac Mattson is a 31-year-old right-handed pitcher for the Pittsburgh Pirates. Born July 14, 1995, in Erie, Pennsylvania, he stands 6-foot-2 and weighs 214 pounds. The Los Angeles Angels drafted him in the 19th round, 565th overall, in 2017 out of Pittsburgh. He made his major league debut on May 7, 2021.

Isaac Mattson's 2026 season

Isaac Mattson pitched in 38 games out of the bullpen for the Pittsburgh Pirates in 2026, his fourth season in the majors. The right-hander worked 38⅔ innings with a 5.35 ERA and a 1.60 WHIP, striking out 36 (20.5 percent of batters) and walking 18 (10.2 percent). He was worth 0.3 fWAR.

Through 89 career appearances, he has 90 strikeouts and a 3.94 ERA in 96 innings.

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