Riley O'Brien

Riley O'Brien's 2026 season

In 2026, his fifth season in the majors, Riley O'Brien made 66 appearances in relief for the St. Louis Cardinals. The right-hander worked 64 innings with a 4.08 ERA and a 1.28 WHIP, striking out 64 (23.2 percent of batters) and walking 29 (10.5 percent). He converted 38 of 46 save chances. He was worth 0.3 fWAR.

That was a career best in saves (38). Through 118 career appearances, he has 44 saves and 123 strikeouts and a 3.83 ERA in 122⅓ innings.