Mike Foltynewicz has thrown 9,701 pitches that have been tracked by the PITCHf/x system between 2013 and 2018, including pitches thrown in the MLB Regular Season and Spring Training. In 2018, he has relied primarily on his Fourseam Fastball (97mph) and Slider (87mph), also mixing in a Sinker (97mph), Curve (80mph) and Change (88mph).
Basic description of 2018 pitches compared to other RHP:
His fourseam fastball is blazing fast. His slider is much harder than usual. His sinker is thrown at a speed that's borderline unfair, results in many more groundballs compared to other pitchers' sinkers and has slight armside run. His curve has little depth, is slightly harder than usual, has primarily 12-6 movement and results in somewhat more flyballs compared to other pitchers' curves. His change generates a very high amount of groundballs compared to other pitchers' changeups, is much firmer than usual, has a lot of backspin and has slight armside fade.