Based on this season alone the person up to vote of thats in the mix for being the worst is Coronel. Though he has more goodwill from fans than others.
Funny part is that he's barely had anything to do. Through four games we've had one of the lowest shots on target allowed in league history. Lowest since the 2010 LA Galaxy, although if you're the depressive type don't look at that LA team's record through four games compared to ours...