Bradley Wright-Phillips guided the New York Red Bulls to victory, while FC Dallas extended their lead in Sunday's (AEST) MLS action.
Wright-Phillips's second-half goal proved the difference as the Red Bulls defeated the Vancouver Whitecaps 1-0 to move to within a point of Eastern Conference leaders New York City.
The club's record goalscorer found the net five minutes into the second half, extending his season tally to 17 as the Red Bulls moved a point behind NYC.
In the Western Conference, FC Dallas extended their lead atop the standings with a 3-1 win against Portland Timbers.
Mauro Diaz opened the scoring from the penalty spot in the 14th minute, before Victor Ulloa doubled their advantage on the stroke of half-time.
Walker Zimmerman made it 3-0 eight minutes into the second period, before Diego Valeri found a consolation for the reigning MLS Cup champions in the closing stages.
LA Galaxy ended their six-game winless run in the league thanks to a late 2-1 victory at home to Columbus Crew.
The scores were locked at 0-0 approaching the last 10 minutes before Baggio Husidic found the net for the Galaxy.
LA's lead was then doubled four minutes later, with Giovani dos Santos scoring his third goal in five games, with Adam Jahn scoring a consolation for Columbus.
Elsewhere, Chicago Fire got the better of Philadelphia Union 3-0 and New England Revolution accounted for Colorado Rapids 2-0.