Although he has not thrown an MLB pitch in 2020, Zach Davies threw 10,039 pitches that were tracked by the PITCHf/x system between 2014 and 2019, including pitches thrown in the MLB Regular Season, the MLB Postseason, Spring Training and Fall/Winter Ball. In 2019, he relied primarily on his Sinker (89mph) and Change (80mph), also mixing in a Cutter (87mph). He also rarely threw a Curve (76mph) and Slider (81mph).
Basic description of 2019 pitches compared to other RHP:
His sinker has below average velo, has little sinking action compared to a true sinker, results in somewhat more flyballs compared to other pitchers' sinkers and has slight armside run. His change has below average velo and has slight armside fade. His cutter is basically never swung at and missed compared to other pitchers' cutters, has surprisingly little cutting action and has good "rise". His curve is basically never swung at and missed compared to other pitchers' curves and has slightly below average velo. His slider (take this with a grain of salt because he's only thrown 16 of them in 2019) is basically never swung at and missed compared to other pitchers' sliders, is an extreme flyball pitch compared to other pitchers' sliders, has below average velo and has some two-plane movement.