In fairness to him, he's probably not up to the setup role, and apparently there's no one else, with Wade and Kuo out of commission.
But, B has single handedly cost the Dodgers two games this year, blowing his opportunity. And, in last night's game, it wasn't just his arm. A bad decision (by admittedly a young player) cost an out, in trying to get a runner at the plate that could not be gotten. Without that poor fielding decision, the game goes to OT.