Although they have not thrown an MLB pitch in 2023, Luis Frías threw 1,347 pitches that were tracked by the PITCHf/x system between 2021 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Fourseam Fastball (96mph) and Curve (85mph), also mixing in a Change (89mph). He also rarely threw a Slider (87mph) and Sinker (97mph).
In 2022, compared to other RHP:
His fourseam fastball has much less armside movement than typical, generates more whiffs/swing compared to other pitchers' fourseamers and has well above average velo. His curve is thrown extremely hard, generates an extremely high number of swings & misses compared to other pitchers' curves, has primarily 12-6 movement, has little depth and results in somewhat more flyballs compared to other pitchers' curves. His change is thrown extremely hard and has surprising cut action. His slider results in more flyballs compared to other pitchers' sliders, is much harder than usual and has primarily 12-6 movement. His sinker (take this with a grain of salt because he's only thrown 14 of them in 2022) is thrown at a speed that's borderline unfair, is an extreme flyball pitch compared to other pitchers' sinkers, has less armside run than typical and has little sinking action compared to a true sinker.