Broderick, 24, was a Rule 5 Draft pick from the Cardinals this past offseason. He appeared in 11 games for the Nats, pitching to a 6.57 ERA in 12 1/3 relief innings. He allowed 16 hits, walked three and struck out just four, though his 60% ground ball rate is impressive. As a Rule 5 pick, Broderick must first clear waivers and be offered back to St. Louis before Washington could send him to the minors.
Kimball, 25, was rated as the Nats' seventh best prospect by Baseball America thanks to his "heavy fastball," splitter, curveball, and "fierce mound presence." They project him to be a set-up man in the future. Kimball did not allow a run in 13 2/3 innings in Triple-A this year, striking out 14 but walking eight.