Although he has not thrown an MLB pitch in 2020, Stephen Strasburg threw 23,725 pitches that were tracked by the PITCHf/x system between 2009 and 2019, including pitches thrown in the MLB Regular Season, the MLB Postseason and Fall/Winter Ball. In 2019, he relied primarily on his Curve (82mph), Fourseam Fastball (94mph) and Change (88mph), also mixing in a Sinker
Basic description of 2019 pitches compared to other RHP:
His curve generates a high number of swings & misses compared to other pitchers' curves, generates a very high amount of groundballs compared to other pitchers' curves, is slightly harder than usual and has slight glove-side movement. His fourseam fastball generates more whiffs/swing compared to other pitchers' fourseamers, has some natural sinking action and has slightly above average velo. His change dives down out of the zone, generates a high number of swings & misses compared to other pitchers' changeups, is much firmer than usual, results in somewhat more groundballs compared to other pitchers' changeups and has slight armside fade. His sinker results in somewhat more groundballs 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 12 of them in 2019) is thrown extremely hard and has less than expected depth.