Non-MLB
Although they have not thrown an MLB pitch in 2026, César Valdez threw 7,603 pitches that were tracked by the PITCHf/x system between 2010 and 2025, including pitches thrown in the MLB Regular Season, The World Baseball Classic, Spring Training and Fall/Winter Ball. In 2025, they relied primarily on their Sinker (85mph), Change (79mph) and Slider (76mph).
In 2025, compared to other RHP:
Their sinker is so slow that it is substantially gravitational, has heavy sinking action and has slight armside run. Their change comes in below hitting speed and dives down out of the zone. Their slider comes in below hitting speed, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sliders, sweeps across the zone, generates fewer whiffs/swing compared to other pitchers' sliders and has some two-plane movement.