San Diego FC saw off Los Angeles FC in a five-goal thriller in MLS, while the LA Galaxy also lost.

A SoCal derby between San Diego and LAFC finished 3-2 in favour of this season's expansion team, who are flying high in the Western Conference.

All of the goals came in the first half at Snapdragon Stadium, where San Diego led 3-0 by the 40th minute.

Christopher McVey opened the scoring before Onni Valakari and Alex Mighten put San Diego in complete control.

However, quickfire efforts from Artem Smoliakov and Cengiz Under dragged LAFC into the contest, only for Igor Jesus to see red early in the second half, derailing their comeback hopes.

Reigning MLS Cup champions the Galaxy, meanwhile, went down 2-1 to Orlando City in extraordinary fashion.

John McCarthy's blunder proved costly for the Galaxy, as he spilled Luis Muriel's long-range free-kick over the line in the 90th minute.

Muriel's winner completed a late turnaround for Orlando, who equalised through Martín Ojeda's 76th-minute penalty, with Christian Ramirez having put the Galaxy ahead early on.

The Galaxy have now lost four of their six league games this season and are still searching for their first win. They sit 14th in the West, above only Sporting Kansas City.

Data Debrief: A first time for everything

LAFC have lost to an expansion team for the very first time in regular-season play, having registered seven wins and a draw from their previous eight such meetings before the defeat to San Diego, who avoided becoming just the second new franchise, after Orlando in 2015, to go winless in their first three home games in MLS.

The Galaxy, on the other hand, have got off to the worst start by a defending MLS Cup champion in the history of the competition.

They have just two points from six games; the previous lowest points total by a reigning champion through their first six games of a season was four.