Although he has not thrown an MLB pitch in 2019, Sean Newcomb threw 4,744 pitches that were tracked by the PITCHf/x system between 2015 and 2018, including pitches thrown in the MLB Regular Season and the MLB Postseason. In 2018, he relied primarily on his Fourseam Fastball (94mph), also mixing in a Change (87mph) and Curve (77mph). He also rarely threw a Slider (81mph).
Basic description of 2018 pitches compared to other LHP:
His fourseam fastball generates more whiffs/swing compared to other pitchers' fourseamers, has less armside movement than typical and has slightly above average velo. His change is thrown extremely hard, generates a very high amount of groundballs compared to other pitchers' changeups and has slight cut action. His curve has an exceptional bite, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' curves and has slight glove-side movement. His slider sweeps across the zone, has exceptional depth, generates more whiffs/swing compared to other pitchers' sliders and results in somewhat more flyballs compared to other pitchers' sliders.