Although he has not thrown an MLB pitch in 2018, Justin Grimm threw 5,978 pitches that were 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 relied primarily on his Fourseam Fastball (95mph) and Curve (82mph). He also rarely threw a Slider (87mph) 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 slightly above average velo. His curve generates an extremely high number of swings & misses compared to other pitchers' curves and is much harder than usual. His slider 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 19 of them in 2017) is basically never swung at and missed compared to other pitchers' sinkers, has surprisingly little armside run, results in more flyballs compared to other pitchers' sinkers, has slightly above average velo and has virtually no sinking action reminiscent of a true sinker.