Vancouver Whitecaps moved within a point of a play-off position in the MLS Western Conference table thanks to a 2-1 defeat of Sporting Kansas City on Sunday.
Ryan Gauld scored in the 23rd minute and Russell Teibert added a second for the Whitecaps in the 35th with a left-footed strike that eluded goalkeeper Tim Melia.
Johnny Russell netted for the sixth successive game, scoring in the 43rd minute for the visitors, but that was the extent of their comeback.
Second-placed Sporting KC (52 points) would have clinched a play-off spot via a win or a draw but will have to wait as they remain five points adrift of leaders Seattle Sounders.
Vancouver are on 40 points, one behind seventh-placed Minnesota and two back of Real Salt Lake and LA Galaxy.
New York Red Bulls made a third-minute goal by Cristian Casseres Jr. stand up on the way to a 1-0 win over New York City that left the rivals tied for eighth place in the Eastern Conference.
The two New York teams are on 40 points, one behind Montreal for the final play-off berth, and they are headed in opposite directions.
Red Bulls are unbeaten in their last seven (5W 2D) as they seek a 12th successive play-off appearance, while New York City have won just three of their last 16 games (5D 6L).
New York City have failed to score in their last four matches and are mired in a 429-minute scoring drought stretching back to a 1-1 draw against Red Bulls on September 22.