Justin Grimm has thrown 3,489 pitches that have been tracked by the PITCHf/x system between 2012 and 2015, including pitches thrown in the MLB Regular Season and Spring Training. In 2015, he has relied primarily on his Fourseam Fastball (95mph) and Curve (82mph), also mixing in a Slider (84mph). He also rarely throws a Sinker
Basic description of 2015 pitches compared to other RHP:
His fourseam fastball is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers, 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, is much harder than usual, results in somewhat more groundballs compared to other pitchers' curves and has slight glove-side movement. His slider generates an extremely high number of swings & misses compared to other pitchers' sliders, has exceptional depth, is an extreme flyball pitch compared to other pitchers' sliders and has short glove-side cut. His sinker (take this with a grain of salt because he's only thrown 7 of them in 2015) is basically never swung at and missed compared to other pitchers' sinkers, is an extreme flyball pitch compared to other pitchers' sinkers, has less armside run than typical and has little sinking action compared to a true sinker.