Boston Red Sox
Craig Breslow has thrown 7,737 pitches that have been tracked by the PITCHf/x system between 2008 and 2015, including pitches thrown in the MLB Regular Season, the MLB Postseason and Spring Training. In 2015, he has relied primarily on his Fourseam Fastball (91mph) and Change (80mph), also mixing in a Cutter (87mph) and Sinker (90mph). He also rarely throws a Curve (76mph) and Slow Curve (72mph).
Basic description of 2015 pitches compared to other LHP:
His fourseam fastball has essentially average velo, results in somewhat more flyballs compared to other pitchers' fourseamers and has some added backspin. His change generates a high number of swings & misses compared to other pitchers' changeups, is an extreme flyball pitch compared to other pitchers' changeups, has slight cut action, has an extreme amount of backspin and has slightly below average velo. His cutter is a real worm killer that generates an extreme number of groundballs compared to other pitchers' cutters and has some natural sink. His sinker results in more flyballs compared to other pitchers' sinkers and has little sinking action compared to a true sinker. His curve is basically never swung at and missed compared to other pitchers' curves, results in more flyballs compared to other pitchers' curves, has little depth and has primarily 12-6 movement. His slow curve (take this with a grain of salt because he's only thrown 7 of them in 2015) is a real yakker that's separated from his other curveball due to its big drop and slow speed.