Riley O'Brien

St. Louis Cardinals

Pitch Repertoire At-A-Glance

Riley O'Brien has thrown 2,794 pitches that have been tracked by the PITCHf/x system between 2021 and 2025, including pitches thrown in the MLB Regular Season and Spring Training. In 2025, they have relied primarily on their Sinker (98mph), Cutter (90mph) and Slider (83mph).