Carlos Vela scored a brace as LAFC crushed Seattle Sounders 4-1 on Sunday to boost their position atop the Western Conference.
Atlanta were upstaged by FC Dallas 2-1 on Saturday – leaving Frank de Boer's side without a victory at home in the league this season.
Zlatan Ibrahimovic scored for the fifth straight game as LA Galaxy overcame the Houston Dynamo in MLS.
Hwang In-beom's goal saw the Vancouver Whitecaps hand Los Angeles FC a surprise MLS defeat.
Former Ajax captain Siem de Jong is confident Sydney FC can win silverware this season, heading into the A-League finals.
Sporting Kansas City's 16-year-old sensation Gianluca Busio earned a point for the hosts on Sunday.
Carlos Vela set up one goal and scored another as Los Angeles FC continued their rich vein of form in MLS.
Nemanja Nikolic cancelled out Yordy Reyna's opener to leave Vancouver Whitecaps searching for their first win of the season.
Extreme weather in Denver forced the MLS fixture between Colorado Rapids and Seattle Sounders to be postponed until September.
Wayne Rooney served a suspension for his red card against Los Angeles FC as D.C. United remained locked at 0-0 against Montreal Impact.