Felix Doubront told the Red Sox medical staff that he bumped his left shoulder on a car door Monday. That might help explain his feeling of shoulder weakness (and subsequent dip in velocity) in Tuesday's five-run, four-inning thrashing by the Blue Jays. Doubront was placed on the 15-day disabled list Wednesday with what's being termed a "left shoulder strain" -- though it sounds like it might just be a contusion. Allen Webster, Brandon Workman, and Rubby De La Rosa are the candidates to fill Boston's vacant rotation spot.