Oakland Athletics outfielder Matt Joyce (back) was placed on the 10-day DL, retroactive to June 3.
Joyce has been out of action since Saturday with what the team is calling a lumbar strain. He was hoping to return to the lineup on Wednesday, but now will be out at least a week. Nick Martini was called up from Triple-A to fill Joyce's spot on the roster.
Joyce has batted .196 with 7 homers and 13 RBI in 199 plate appearances this season.
Source: MLB.com