Santana’s two-seamer was his best fastball in 2018 and featured promising arm-side movement. He pounded the zone with the pitch, and while it didn’t induce many swings and misses and was a bit below average for a sinker at generating ground balls, it produced a .125 ISO that helped him minimize damage overall.
Santana’s slider doesn’t feature much movement on the surface but has been a borderline Money Pitch in his brief major league career, meshing well with his two-seamer. In 2018, Santana’s slider recorded a 22.3% swinging-strike rate to go along with a 45.6% zone rate and a 33% chase rate. He probably has enough to be a successful reliever between his slider and his two-seamer.
Santana’s four-seamer is his third-most used pitch and was hit hard in 2018. It doesn’t really bring much to the table and is worse than his two-seamer in almost every category, so it should likely be phased out.
Santana occasionally throws a hard changeup that was unhittable over 21 pitches in 2018. Outside of the excellent results, none of the peripherals really stand out. It did generate a 66.7% ground-ball rate, which may be a sign of things to come if Santana throws his changeup more often.