Although he has not thrown an MLB pitch in 2019, Johan Santana threw 11,861 pitches that were tracked by the PITCHf/x system between 2007 and 2012, including pitches thrown in the MLB Regular Season and the MLB Postseason. In 2012, he relied primarily on his Fourseam Fastball (90mph), Change (78mph) and Slider (81mph), also mixing in a Sinker (89mph).
Basic description of 2012 pitches compared to other LHP:
His fourseam fastball results in somewhat more flyballs compared to other pitchers' fourseamers, has slightly below average velo, has slightly less natural movement than typical and has some added backspin. His change generates a high number of swings & misses compared to other pitchers' changeups, has below average velo, has a lot of backspin and results in somewhat more flyballs compared to other pitchers' changeups. His slider has less than expected depth and has primarily 12-6 movement. His sinker generates a high number of swings & misses compared to other pitchers' sinkers, results in more flyballs compared to other pitchers' sinkers, has less armside run than typical and has little sinking action compared to a true sinker.