Although he has not thrown an MLB pitch in 2016, Roberto Hernandez threw 18,906 pitches that were tracked by the PITCHf/x system between 2007 and 2015, including pitches thrown in the MLB Regular Season, the MLB Postseason and Spring Training. In 2015, he relied primarily on his Sinker (90mph) and Change (83mph), also mixing in a Slider (85mph). He also rarely threw a Fourseam Fastball (90mph).
Basic description of 2015 pitches compared to other RHP:
His sinker has slightly below average velo. His change results in somewhat more groundballs compared to other pitchers' changeups, has slight armside fade and has some natural sink to it. His slider is basically never swung at and missed compared to other pitchers' sliders, has much less depth than expected and has primarily 12-6 movement. His fourseam fastball (take this with a grain of salt because he's only thrown 18 of them in 2015) is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers and has below average velo.