Stephen Strasburg has thrown 12,390 pitches that have been tracked by the PITCHf/x system between 2009 and 2015, including pitches thrown in the MLB Regular Season, the MLB Postseason and Fall/Winter Ball. In 2015, he has relied primarily on his Fourseam Fastball (96mph) and Curve (82mph), also mixing in a Change (89mph). He also rarely throws a Sinker
Basic description of 2015 pitches compared to other RHP:
His fourseam fastball has well above average velo, results in somewhat more groundballs compared to other pitchers' fourseamers and has slight armside run. His curve generates a very high amount of groundballs compared to other pitchers' curves, generates more whiffs/swing compared to other pitchers' curves, is much harder than usual and has slight glove-side movement. His change is thrown extremely hard, generates a high number of swings & misses compared to other pitchers' changeups, has slight armside fade and has some natural sink to it. His sinker (take this with a grain of salt because he's only thrown 16 of them in 2015) is basically never swung at and missed compared to other pitchers' sinkers, results in more flyballs compared to other pitchers' sinkers, has slight armside run and has slightly above average velo. His slider (take this with a grain of salt because he's only thrown 11 of them in 2015) is thrown extremely hard, is an extreme flyball pitch compared to other pitchers' sliders, has less than expected depth and has primarily 12-6 movement.