Gentry said he still deals with some lingering issues in his left hand. Gentry, who became eligible to return Sunday, was placed on the DL after he was hit by a pitch against the A's on June 18.
He is hitting .216 with one home run and nine RBIs this season.
Master Tesfatsionis an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.