Vela scores 17th goal, Rossi gets 9th; LAFC beats Sporting
Christian Ramirez opened the scoring in the 28th minute for Los Angeles (12-2-4) by sending a free kick under the wall and past a diving Tim Melia. Rossi made it 2-0 in the 50th by curling a shot from the 18-yard line and Vela scored from the penalty spot in the 63rd for a 3-0 lead.
Rodolfo Zelaya scored on a breakaway in the 89th for a 4-1 lead and Mohamed El-Munir finished an individual effort two minutes later.
Kansas City (4-7-7) dropped its second straight following a three-game undefeated run.
Yohan Croizet scored for Kansas City in the 85th after settling Ilie Sánchez's chipped pass and finishing with his left foot. Minutes earlier, Dániel Sallói was denied his first goal of the season when Los Angeles goalkeeper Pablo Sisniega blocked a penalty kick.