Giovani dos Santos and Steven Gerrard scored to highlight the LA Galaxy's 5-2 win over Real Salt Lake on Saturday night.
RSL keeper Nick Rimando, making his 400th MLS start, saved Gerrard's penalty in the sixth minute and Juan Manuel Martinez gave the Utah club the early lead on a header 10 minutes later.
But Gyasi Zardes tied it for LA with a right-footed blast in the 19th minute and Mike Magee smashed in Emmanuel Boateng's cross for the go-ahead goal in the 26th.
Boateng scored his first MLS goal in the 41st minute and set up Dos Santos' remarkable left-footed chip shot to make it 4-1 for the Galaxy shortly before halftime.
Javier Morales' penalty pulled the visitors to within 4-2 in the 71st minute, but Gerrard ran through the RSL defense with a vintage goal to cap scoring for LA with his first goal of the season in stoppage time.
RSL's three-game winning streak came to and end.
Sebastian Giovinco scored his fifth and sixth goals of the season to help Toronto FC beat the Montreal Impact 2-0.
The reigning MVP scored from the penalty spot in the first half and on a counter-attack in the 81st minute.
Jozy Altidore dribbled past Ambroise Oyongo in the 39th minute and was taken down in the penalty area by a sliding Victor Cabrera. Referee Ted Unkel immediately pointed to the spot. Giovinco made no mistake, slotting a low shot inside the left post for his fifth goal of the season.
Giovinco scored again in the 81st on a low blast to the far corner to secure the win, bringing Toronto to 11 points, one off the lead in the Eastern Conference.
The Philadelphia Union top the East after Chris Pontius and C.J. Sapong scored in a 2-0 win over New York City FC.
Moments after David Villa rattled the crossbar for NYCFC, Pontius opened the scoring in the 26th minute, when he finished Tranquillo Barnetta's short cross with a right-footed shot from the top of the six-yard box.
Sapong made it 2-0 in the 41st minute, redirecting Sebastien Le Toux's right-footed blast with a well-placed flick into the left corner.
The Union set a team record with their fifth home win in a row. They bounced back from a 2-1 loss at Seattle and are level on points with the Montreal Impact for the East lead.
NYCFC remain winless in six games going back to a victory to open the season.
Jermaine Jones, Luis Solignac and Kevin Doyle scored and the Colorado Rapids won their third straight game, beating the Seattle Sounders 3-1.
Jones scored for the second straight game to start his season following a suspension. He gave the Rapids the lead with a header in the 20th minute following Shkelzen Gashi's free kick.
Solignac finished Dominique Badji's cross in the 51st minute to make it 2-0 and Doyle capped the scoring in the 86th with a toe-poke finish off Dennis Castillo's cross. Seattle's Brad Evans was sent off for unsporting behavior following the goal.
The Sounders' Jordan Morris scored his second professional goal in the 63rd minute to cut it to 2-1. Morris got free of Rapids defender Mekeil Williams and cut the shot back into the far corner.
A spectacular chip from Luciano Acosta helped D.C. United' defeat the New England Revolution 3-0.
Lamar Neagle gave the hosts the lead from the penalty spot in the 33rd minute after Marcelo Sarvas was tripped up in the box by Je-Vaughn Watson.
It stayed 1-0 until the 86th minute, when Acosta lofted an audacious shot from distance over Revs keeper Bobby Shuttleworth for his first MLS goal.
D.C. added a third goal when Alvaro Saborio pounced on a defensive miscue in the 90th minute. The goal was initially ruled out for offside but after a long discussion referee Alan Kelly overturned the call.
United, playing without suspended coach Ben Olsen, won its second straight home game while New England stayed winless on the road.
Revs defender Chris Tierney and United forward Fabian Espindola left the game before halftime with leg injuries.
Jordan Harvey and Kekuta Manneh scored in the Vancouver Whitecaps' 3-0 victory over FC Dallas.
Shut out in three straight games, Vancouver took the lead in 35th minute when Manneh whipped a cross in that Dallas goalkeeper Chris Seitz punched into his own net off defender Maynor Figueroa.
Harvey made it 2-0 in the 63rd minute following a Cristian Techera corner after the ball fell to him in the Dallas penalty area.
Manneh sealed it in the 77th when Blas Perez -- just into the match as a sub against his former team -- touched the ball to Manneh for a shot through Seitz's legs.
FC Dallas still leads MLS with 17 points but saw a six-game unbeaten streak end.
Kei Kamara's 21st-minute penalty was all Columbus Crew SC needed to beat the 10-man Houston Dynamo 1-0.
Dynamo goalkeeper Tyler Deric was sent off in the 18th minute for diving and tripping up Crew SC midfielder Federico Higuain as he raced past Deric for a loose ball in the box.
Kamara put the penalty into the right corner past reserve keeper Joe Willis, and the goal held up through 90 minutes.
Columbus won its second straight game after going five without a victory to start the season, while Houston stayed in last place in the Western Conference.