Johnny Russell scored and assisted two others as Sporting KC found the back of the net at home for the 28th consecutive regular-season game.
Cristian Arango's brace included the fastest goal in LAFC history after opening the scoring just 20 seconds into the match.
Nani provided an assist as Daryl Dike played a key role in Orlando City's thrilling 3-2 win over Columbus Crew in MLS.
LAFC returned to winning ways thanks to Mamadou Fall at Banc of California Stadium on Friday.
Reigning MLS Golden Boot and Young Player of the Year Diego Rossi has left LAFC for join Fenerbahce.
Philadelphia Union midfielder Alejandro Bedoya called on Congress to protect USA's citizens after a spate of gun violence incident