Grimm returns from 10-day DL, Royals send Oaks to minors

The Royals will get some bullpen help back from the disabled list as reliever Justin Grimm was activated on Tuesday.

Grimm returns from an extended stay on the 10-day DL, sidelined since the end of April with back stiffness.

Grimm, 29, has struggled in the limited action he's seen this year. The righty is 0-2 with a 21.86 ERA over seven innings.

Trevor Oaks was optioned to Triple-A Omaha in a corresponding move.