Red Sox outfielders Jacoby Ellsbury and Mike Cameron could both be headed to the disabled list. An initial diagnosis showed that Cameron is dealing with a kidney stone, according to his agent. "I spoke to Cam last night," agent Mike Nicotera said. "Seems to be a kidney stone that he needs to pass. He's going to follow up with doctors in Boston today." Ellsbury is scheduled to see a doctor in Boston on Friday as he continues to experience pain in the aftermath of his collision Sunday with third baseman Adrian Beltre.