Felix Hernandez has thrown 28,982 pitches that have been tracked by the PITCHf/x system between 2007 and 2015, including pitches thrown in the MLB Regular Season, the MLB Postseason, The World Baseball Classic and Spring Training. In 2015, he has relied primarily on his Sinker (92mph), Change (89mph) and Curve (81mph), also mixing in a Fourseam Fastball (93mph) and Slider (85mph). He also rarely throws a Cutter (92mph).
Basic description of 2015 pitches compared to other RHP:
His sinker results in somewhat more groundballs compared to other pitchers' sinkers. His change is thrown extremely hard, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' changeups and dives down out of the zone. His curve is a real worm killer that generates an extreme number of groundballs compared to other pitchers' curves, generates more whiffs/swing compared to other pitchers' curves, has a sharp downward bite, is slightly harder than usual and has slight glove-side movement. His fourseam fastball has less armside movement than typical, results in many more groundballs compared to other pitchers' fourseamers, has some natural sinking action and has essentially average velo. His slider has exceptional depth and has primarily 12-6 movement. His cutter (take this with a grain of salt because he's only thrown 12 of them in 2015) is basically never swung at and missed compared to other pitchers' cutters, is blazing fast, has little cutting action and has some natural sink.