Justin Grimm has thrown 5,232 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 (82mph). He also rarely throws a Slider (85mph).
Basic description of 2017 pitches compared to other RHP:
His fourseam fastball has good "rising" action, has less armside movement than typical, results in more flyballs compared to other pitchers' fourseamers 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 many more groundballs compared to other pitchers' curves. His slider (take this with a grain of salt because he's only thrown 7 of them in 2017) is basically never swung at and missed compared to other pitchers' sliders, has exceptional depth and is an extreme flyball pitch compared to other pitchers' sliders.