MLS Conference finals

Galaxy skipper Robbie Keane holds the trophy with his teammates after winning the Western Conference Championship.

Sounders goalkeeper Stefan Frei attempts to stop a header from Galaxy defender Omar Gonzalez.

LA Galaxy players surround Juninho after he scores the goal that clinched the MLS Western Conference crown.

Galaxy forward Robbie Keane passes the ball around Sounders midfielder Brad Evans.

Seattle forward Obafemi Martins dribbles past Los Angeles midfielder Marcelo Sarvas.

Bracing for the cold of Seattle, Los Angeles head coach Bruce Arena watches play from the touchline.

Sounders forward Clint Dempsey wraps his foot around the ball, but has the goal ruled out for offside.

Behind enemy lines: A Los Angeles Galaxy supporter cringes as Seattle Sounders fans hold up their scarves before the match.

Seattle Sounders FC forward Clint Dempsey celebrates his goal which put Seattle 2-1 up on aggregate.

Los Angeles midfielder Stefan Ishizaki tries to split the defense of Seattle midfielder Lamar Neagle and defender Leo Gonzalez.

Galaxy's Landon Donovan attempts a cross well defended by Sounders' Brad Evans and Gonzalo Pineda.

Sounders FC supporters wave flags before the start of the Western Conference Championship against LA Galaxy.

Seattle Sounders FC supporters march to the Western Conference second leg match at CenturyLink Field.

New England Revolution midfielder Jermaine Jones holds the trophy after clinching the Eastern Conference Championship.

U.S. international Jermaine Jones salutes the home supporters after winning the MLS Eastern Conference finals.

Revolution forward Charlie Davies celebrates his goal. Davies' brace secured New England a place in the MLS Cup.

Red Bulls midfielder Dax McCarty and Revolution midfielder Scott Caldwell go up for a header during the first half.

New York Red Bulls midfielder Tim Cahill celebrates his first half goal against New England.

New England fans show their colors before the Eastern Conference Championship against the New York Red Bulls.

Galaxy midfielder Marcelo Sarvas scores the lone goal of the Western Conference first leg to give LA a 1-0 advantage over Seattle.

Galaxy forward Landon Donovan slides beneath a leaping Obafemi Martins during the MLS Western Conference finals.

Sounders goalkeeper Stefan Frei leaps to grab the ball in front of Galaxy defender Omar Gonzalez.

In a file photo, Landon Donovan of the Los Angeles Galaxy moves the ball past Seattle Sounders defender DeAndre Yedlin.

Seattle defender Chad Marshall slides to poke the ball away from Los Angeles skipper Robbie Keane.

Red Bulls forward Bradley Wright-Phillips scores with his head to level the score with visiting New England.

The Revolution back line look for offside, but the Bradley Wright-Phillips goal stands.

New York Red Bulls forward Bradley Wright-Phillips leaps in celebration after scoring a first half goal against the New England Revolution.

New York forward Thierry Henry lifts the ball away from New England midfielder Scott Caldwell during the first half.