Isaac Mattson

Isaac Mattson: live stats, Statcast data and splits for the Pittsburgh Pirates right-handed pitcher.

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.

PODCAST: Why trading Logan Gilbert should be on the table, blockbuster prospect trades, Ryan Sloan’s trade value

Baseball Things podcast: why the Seattle Mariners should consider trading Logan Gilbert, blockbuster prospect deals and Ryan Sloan’s value.

PODCAST: 3B Prospects, how the D improves, every arbitration decision

Baseball Things podcast: the Seattle Mariners' third base prospects, how the defense gets better, and a call on every arbitration case.

The J.P. Crawford Paradox

J.P. Crawford has provided leadership and a steady presence on the club's roster, but time may have just run out on the former first-round pick.

PODCAST: 3 Mariners players that should be on the trade block

Baseball Things podcast: Jason A. Churchill names three Seattle Mariners players who should be on the trade block this offseason.

Isaac Mattson's 2026 season

Read more

PODCAST: Why trading Logan Gilbert should be on the table, blockbuster prospect trades, Ryan Sloan’s trade value

PODCAST: 3B Prospects, how the D improves, every arbitration decision

The J.P. Crawford Paradox

PODCAST: 3 Mariners players that should be on the trade block