Roberts had been on the DL since April 10 with an abdominal strain. The 10-year major leaguer played in four games for the Orioles this season, going two-for-14 at the plate.
To make room for Roberts on the roster, the club will send infielder Scott Moore to the minors. Moore batted .209 with 10 RBIs in 41 games for the Orioles this season.
(Writing by Steve Ginsburg; Editing by Justin Palmer)