Seattle Mariners
Gregory Santos has thrown 2,148 pitches that have been tracked by the PITCHf/x system between 2021 and 2025, including pitches thrown in the MLB Regular Season, Spring Training and Fall/Winter Ball. In 2025, they have relied primarily on their Slider (89mph) and Sinker (98mph).
In 2025, compared to other RHP:
Their slider is thrown extremely hard, is basically never swung at and missed compared to other pitchers' sliders, has short glove-side cut, results in somewhat more groundballs compared to other pitchers' sliders and has some two-plane movement. Their sinker is thrown at a speed that's borderline unfair, generates a high number of swings & misses compared to other pitchers' sinkers, is an extreme flyball pitch compared to other pitchers' sinkers, has surprisingly little armside run and has some natural sinking action.