Seattle Mariners
Although they have not thrown an MLB pitch in 2026, Gabe Speier threw 3,256 pitches that were tracked by the PITCHf/x system between 2018 and 2025, including pitches thrown in the MLB Regular Season and Spring Training. In 2025, they relied primarily on their Fourseam Fastball (95mph), Sinker (94mph) and Slider (83mph). He also rarely threw a Change (90mph).
In 2025, compared to other LHP:
Their fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, is blazing fast, results in more flyballs compared to other pitchers' fourseamers and has some natural sinking action. Their sinker is blazing fast, generates fewer whiffs/swing compared to other pitchers' sinkers, has slight armside run and has some natural sinking action. Their slider has exceptional depth and generates more whiffs/swing compared to other pitchers' sliders. Their change (take this with a grain of salt because they've only thrown 1 of them in 2025) is thrown extremely hard, generates an extremely high number of swings & misses compared to other pitchers' changeups, dives down out of the zone, is an extreme flyball pitch compared to other pitchers' changeups and has slight cut action.