Although he has not thrown an MLB pitch in 2017, Felix Hernandez threw 32,674 pitches that were tracked by the PITCHf/x system between 2007 and 2016, including pitches thrown in the MLB Regular Season, the MLB Postseason, The World Baseball Classic and Spring Training. In 2016, he relied primarily on his Change (88mph) and Sinker (91mph), also mixing in a Curve (80mph), Fourseam Fastball (91mph) and Slider (85mph). He also rarely threw a Cutter (90mph).
Basic description of 2016 pitches compared to other RHP:
His change dives down out of the zone, generates a very high amount of groundballs compared to other pitchers' changeups and is much firmer than usual. His sinker is a prototypical pitch with few remarkable qualities. His curve has a sharp downward bite and has slight glove-side movement. His fourseam fastball generates fewer whiffs/swing compared to other pitchers' fourseamers, has some natural sinking action, has slightly below average velo and has slightly less natural movement than typical. His slider is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sliders and has some two-plane movement. His cutter is an extreme flyball pitch compared to other pitchers' cutters, has surprisingly little cutting action and has slightly above average velo.