Zlatan Ibrahimovic scored from the penalty spot after a foul by Socceroos left-back Brad Smith as Los Angeles Galaxy beat Seattle Sounders 3-0 for Dominic Kinnear's first victory as interim coach.
Los Angeles (11-11-8) snapped an eight-game winless stretch, getting their first win since July 29. Seattle (13-11-5) have lost two straight after a nine-game winning streak.
Ibrahimovic opened the scoring in the ninth minute with his 18th goal of the season. The former Sweden international has 15 goals in his last 15 games.
Smith, who is on loan at Seattle from Bournemouth, fouled Ola Kamara leading to the first goal, and his day got worse after he was replaced after just 16 minutes with a reported right hamstring strain.
Kamara made it 2-0 in the 40th minute with an easy tap-in at the far post.
Emmanuel Boateng capped it with a goal in the 52nd minute by capitalising on a defensive mistake.
The Galaxy entered with just four goals in the past six series meetings, going 0-3-3. Seattle hadn't allowed multiple goals since June 30.
Defender Matt Hedges scored a header in the 87th minute to help FC Dallas beat Vancouver Whitecaps 2-1.
Santiago Mosquera opened the scoring for FC Dallas (15-6-8) with a header in the 42nd minute.
The Whitecaps (11-11-7) drew level in the 66th minute through Kei Kamara's header.
Jay Simpson scored his first two goals of the season in Philadelphia's 2-0 victory over Sporting KC.
Philadelphia (14-12-4) have won six of their last eight games. Sporting KC (15-8-6) had won three of their prior four away games.