In the MLS Cup playoffs, Real Salt Lake had to play another game after tying Sporting Kansas City in Leg 1 of the Western Conference semifinals. Due to the aggregate scoring model, a team advanced to the next round only if, after two games, it scored the most total goals. If both teams were tied, the team with more away goals advanced.
The same scenario was true for the conference finals. The final round, however, was only one game, winner take all.
Now, that playoff format will be a thing of the past. Last month, Major League Soccer announced sweeping changes where every round will be win-or-go-home.