San Diego Padres
Keith Hessler has thrown 754 pitches that have been tracked by the PITCHf/x system between 2015 and 2017, including pitches thrown in the MLB Regular Season and Spring Training. In 2017, he has relied primarily on his Fourseam Fastball (92mph) and Slider (84mph), also mixing in a Sinker (92mph).
Basic description of 2017 pitches compared to other LHP:
His fourseam fastball generates a very high amount of groundballs compared to other pitchers' fourseamers, has good "rising" action, has less armside movement than typical and has essentially average velo. His slider is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sliders and has less than expected depth. His sinker (take this with a grain of salt because he's only thrown 8 of them in 2017) is basically never swung at and missed compared to other pitchers' sinkers, is an extreme flyball pitch compared to other pitchers' sinkers, has little sinking action compared to a true sinker and has slightly above average velo.