Although they have not thrown an MLB pitch in 2023, Daulton Jefferies threw 883 pitches that were tracked by the PITCHf/x system between 2020 and 2022, all of them occuring in the MLB Regular Season. In 2022, they relied primarily on their Sinker (93mph) and Cutter (90mph), also mixing in a Change (86mph), Slider (80mph) and Fourseam Fastball (93mph).
In 2022, compared to other RHP:
His sinker results in somewhat more flyballs compared to other pitchers' sinkers and has slight armside run. His cutter has surprisingly little cutting action and has slightly above average velo. His change results in many more groundballs compared to other pitchers' changeups, is slightly firmer than usual, has slight armside fade and has some natural sink to it. His slider has exceptional depth, is an extreme flyball pitch compared to other pitchers' sliders and has below average velo. 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.