Orioles manager Buck Showalter has yet to decide whether Chris Tillman will start on Sunday against the Red Sox as scheduled. The O's are out of playoff contention and Tillman has already thrown a career-high 201 1/3 innings. However, the Red Sox are still playing for home field advantage, so Showalter has also considered the importance of the game. If Tillman doesn't go, Jason Hammel could start on three days' rest.