As David Murphy said yesterday:
The tough thing about managing a baseball game is the tough thing about critiquing those who do. You cannot prove a hypothetical any more than you can a negative. Just because Decision A turned out so wrong doesn’t mean Decision B would have been any more right.
i.e. whoever might have pitched instead of Alvarado against the bottom of the order could have lost the game at at that point. Or not.
Of course, as with Hand the other night, your lefty reliever has to get the lefty hitter he's there to get!