Brentz (shoulder) was reinstated from the 10-day injured list Wednesday.
Brentz will return to the Royals' bullpen after a brief stay on the injured list, and he didn't require a rehab assignment prior to Wednesday's activation. The southpaw has made 17 relief appearances since the All-Star break and has recorded a 3.68 ERA and 1.23 WHIP in 14.2 innings during that time.