Although he has not thrown an MLB pitch in 2018, Raisel Iglesias threw 3,978 pitches that were tracked by the PITCHf/x system between 2014 and 2017, including pitches thrown in the MLB Regular Season and Fall/Winter Ball. In 2017, he relied primarily on his Fourseam Fastball (97mph) and Slider (86mph), also mixing in a Change (89mph). He also rarely threw a Sinker (94mph).
Basic description of 2017 pitches compared to other RHP:
His fourseam fastball generates a very high amount of groundballs compared to other pitchers' fourseamers, has well above average velo and has slight armside run. His slider generates more whiffs/swing compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders and has short glove-side cut. His change is thrown extremely hard, 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 7 of them in 2017) is basically never swung at and missed compared to other pitchers' sinkers, is an extreme flyball pitch compared to other pitchers' sinkers, has less armside run than typical and has slightly above average velo.