Portland Timbers head coach Caleb Porter admits his side were blown away on Wednesday night.

The Timbers, who were seeking a franchise record fifth-consecutive MLS win, were brushed aside 5-0 by a rampaging LA Galaxy at the StubHub Center.

After the match, Porter suggested everything that could go wrong did for the Timbers but was looking to quickly forget about the less-than-impressive result.

"They (the Galaxy) showed what they could do last week with Philly (winning 5-1), and we were well aware of that," Porter said.

"They punished us for it seemed like every mistake we made, and we made some big ones."

Porters added: "I think that's very important, you sit on it and think about it, and then tomorrow it's over.

"We'll, as a staff, address some things in training video, but the biggest thing is we can't let this hangover carry over into our preparation into the next game because we've been playing well. And tonight we didn't play well."

Reigning champions the Galaxy were served by goals from Sebastian Lletget, Robbie Keane, Robbie Rogers, Juninho and Jose Villarreal to move up to third on the Western Conference table.