Racing PositionsSeason in doubt for Orioles' Mountcastle (oblique)3MO's put Mountcastle on 60-day IL with broken foot7MMountcastle, O'Neill latest to land on IL for O's7MO's Mountcastle exits after taking pitch off hand8MO's activate Mountcastle; Cowser, O'Neill to IL1YO's Mountcastle, already on IL, out 8-12 weeks1YOrioles place 1B Mountcastle (hamstring) on IL1Y