Riley O'Brien

Seattle Mariners

Pitch Repertoire At-A-Glance

Riley O'Brien has thrown 743 pitches that have been tracked by the PITCHf/x system between 2021 and 2023, including pitches thrown in the MLB Regular Season and Spring Training. In 2023, they have relied primarily on their Sinker (97mph) and Cutter (92mph), also mixing in a Slider (82mph).