Although they have not thrown an MLB pitch in 2023, Zac Lowther threw 771 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 (90mph) and Change (84mph), also mixing in a Slider (82mph) and Curve (76mph).
In 2022, compared to other LHP:
His fourseam fastball has some natural sinking action, has essentially average velo, results in somewhat more flyballs compared to other pitchers' fourseamers and has slight armside run. His change results in many more groundballs compared to other pitchers' changeups and is slightly firmer than usual. His slider results in more flyballs compared to other pitchers' sliders. His curve is basically never swung at and missed compared to other pitchers' curves, has sweeping glove-side movement, is an extreme flyball pitch compared to other pitchers' curves and has a sharp downward bite.