Although he has not thrown an MLB pitch in 2019, Phil Klein threw 1,176 pitches that were tracked by the PITCHf/x system between 2014 and 2016, including pitches thrown in the MLB Regular Season and Spring Training. In 2016, he relied primarily on his Fourseam Fastball (93mph), also mixing in a Cutter (87mph), Sinker (92mph), Slider (84mph) and Change (86mph). He also rarely threw a Curve (79mph).
Basic description of 2016 pitches compared to other RHP:
His fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers and has essentially average velo. His cutter generates more whiffs/swing compared to other pitchers' cutters and results in somewhat more flyballs compared to other pitchers' cutters. His sinker results in more flyballs compared to other pitchers' sinkers. His slider is an extreme flyball pitch compared to other pitchers' sliders, has less than expected depth and has primarily 12-6 movement. His change has slight cut action and is slightly firmer than usual. His curve (take this with a grain of salt because he's only thrown 15 of them in 2016) generates an extremely high number of swings & misses compared to other pitchers' curves, has primarily 12-6 movement, results in more flyballs compared to other pitchers' curves and has little depth.