The Royals optioned Rojas to Triple-A Omaha on Monday.
Rojas will give up his spot on the active roster to infielder Maikel Garcia (hand), who was reinstated from the 10-day injured list. Recalled from Triple-A when Garcia initially landed on the shelf June 23, Rojas appeared in 28 games during his latest stint in the majors, slashing .225/.257/.310 with one home run, one steal, seven RBI and five runs.