Zlatan Ibrahimovic was on target as LA Galaxy ended their winless streak in MLS, while FC Dallas returned to the Western Conference summit.
The Galaxy had gone seven matches without victory – prompting the resignation of head coach Sigi Schmid prior to last week's 5-3 defeat to Toronto.
LA conceded 11 goals in two games and failed to keep a clean sheet during their skid, however, that changed thanks to Sunday's 3-0 victory over Seattle Sounders.
Ibrahimovic – who scored his 500th career goal against Toronto – broke the deadlock in the ninth minute before Ola Kamara and Emmanuel Boateng got in on the action at StubHub Center.