Boston Red Sox
Joe Kelly has thrown 11,184 pitches that have been tracked by the PITCHf/x system between 2012 and 2018, including pitches thrown in the MLB Regular Season and the MLB Postseason. In 2018, he has relied primarily on his Fourseam Fastball (99mph), also mixing in a Curve
Basic description of 2018 pitches compared to other RHP:
His fourseam fastball is thrown at a speed that's borderline unfair and results in many more groundballs compared to other pitchers' fourseamers. His curve is thrown extremely hard and has an exceptional bite. His slider is thrown extremely hard, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sliders, has exceptional depth and has short glove-side cut. His change generates an extremely high number of swings & misses compared to other pitchers' changeups, is much firmer than usual and has slight armside fade. His sinker is thrown at a speed that's borderline unfair and has little sinking action compared to a true sinker.