Justin Grimm has thrown 5,748 pitches that have been tracked by the PITCHf/x system between 2012 and 2017, including pitches thrown in the MLB Regular Season, the MLB Postseason and Spring Training. In 2017, he has relied primarily on his Fourseam Fastball (96mph) and Curve (83mph). He also rarely throws a Slider (88mph) and Sinker
Basic description of 2017 pitches compared to other RHP:
His fourseam fastball has good "rising" action, has less armside movement than typical and has well above average velo. His curve generates an extremely high number of swings & misses compared to other pitchers' curves, is much harder than usual and results in somewhat more groundballs compared to other pitchers' curves. His slider (take this with a grain of salt because he's only thrown 18 of them in 2017) is an extreme flyball pitch compared to other pitchers' sliders and is much harder than usual. His sinker (take this with a grain of salt because he's only thrown 6 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 surprisingly little armside run, has slightly above average velo and has virtually no sinking action reminiscent of a true sinker.