Alfredo Aceves will take Lackey's spot in the rotation and pitch Thursday night against the Orioles. A couple of days ago, the Red Sox thought there was at least a chance Lackey could just miss one start and avoid a trip to the DL. The Red Sox also announced that pitcher John Lackey was placed on the 15-day disabled list with a strained right biceps. Lackey strained his right biceps against the Toronto Blue Jays on Saturday in his first start since major elbow surgery sidelined him all last season. The Red Sox optioned Jose Iglesias to Pawtucket to make room for Drew. Wednesday afternoon, 34 days after being hit, Drew was in a Boston Red Sox uniform for the first time this season, activated from the seven-day disabled list created for players with concussive symptoms, and batting eighth against Baltimore right-hander Jake Arrieta. Stephen Drew said he has suffered a concussion before, while playing high school football back home in Georgia, but the symptoms he experienced were nothing like the ones he began to feel after being struck in the batting helmet by a pitch thrown by Minnesota left-hander Caleb Thielbar last month.