The New York Red Bulls face a challenge that no MLS team has completed in history. Since 2003, when the playoffs became a two-legged affair, no team has ever overturned a three-goal deficit from the first leg.
On Thursday evening, when Atlanta United come to town, that is precisely what the Red Bulls must do. And they must do it all without the precious comfort of an away goal. This really is a titanic second leg of the Eastern Conference Championships.
Here are three things to watch for.