Scouting Report: Mitchell Parker

Summary

Mitchell Parker has undergone a dramatic pitching transformation in 2026 after a disastrous 2025 season (5.68 ERA). Sent to the minors in March, Parker has completely revamped his arsenal, shifting from a fastball-heavy approach (55% 4-seam usage) to a slider-dominant strategy (58% slider usage). His slider is now 2 mph slower but features significantly more break. Despite the heavy slider usage, Parker is generating elite whiff rates (~40% on the slider) and has elite whiff/chase rates ranking in the 93rd percentile. His fastball has become more effective as a secondary pitch, with batters hitting just .167 against it. Parker is currently operating as a swing man in a new role for the Washington Nationals with a 4.05 ERA, though underlying metrics suggest stronger performance than the ERA indicates.