LOS ANGELES (AP) — Carlos Vela scored two goals in the first half and set up Diego Rossi’s tiebreaking goal in the second half, and Los Angeles FC advanced to the MLS Western Conference final with a wild 5-3 victory over the LA Galaxy on Thursday night in the first postseason edition of this city rivalry.

Adama Diomande added two goals in the second half as top-seeded LAFC earned the 2-year-old franchise’s first postseason victory. LAFC also beat the Galaxy for the first time in the sixth chapter of the lively crosstown derby dubbed El Tráfico.

ATLANTA UNITED 2, UNION 0

ATLANTA (AP) — Julian Gressel scored in the 10th minute, Josef Martinez added a late goal and defending champion Atlanta United beat Philadelphia to advance to the Eastern Conference final.

United will host Toronto FC on Wednesday night. Toronto beat top-seed New York City FC 2-1 on the road Wednesday night.

Pity Martinez came on a ball in about 35 yards in front of goal and sent a diagonal pass right ahead of Gressel. The ball entered the box ahead of Gressel, but he got to it before Philadelphia goalkeeper Andre Blake and touched it left around him to the far post for the score.

Gressel assisted on the Martinez goal, when the striker got forward down the left side and the curled a left footer into the top left corner.