ROBBIE KEANE scored his fifth MLS play-off goal to steer the LA Galaxy to their second consecutive MLS Cup final next weekend.
The Galaxy lost 2-1 to the Sounders last night in Seattle but advanced 4-2 on aggregate thanks to last week's 3-0 first leg win securing them a chance to defend their title.
Sounders striker Eddie Johnson had a goal harshly ruled out for offside in the 13th minute but moments later he put his team ahead.
Seattle needed two more goals to take the game into extra-time and they took a step towards that in the 57th minute with a brilliant diving header from Zach Scott, who met a perfectly delivered Christian Tiffert corner at the near post.
However, the Sounders were stunned when referee Mark Geiger awarded LA a penalty after an attempted cross from Robbie Keane struck the outstretched arm of Adam Johansson.
The Seattle players argued the contact was not deliberate but Keane kept his cool from the spot and his 68th-minute goal deflated a Sounders team that had felt they were close to a remarkable comeback.
There were angry scenes after the final whistle with several Sounders players surrounding Geiger and their Cuban-born midfielder Osvaldo Alonso was sent off with a second yellow card.
"Seattle are a good team, certainly the better team today, but it's about getting to the final and we did that," said Keane.
"There is no way you can try and get a penalty in that situation. I was just trying to get the ball across and the referee gave the penalty. Lucky for us."