Chad Barrett scored in the 39th minute to help the Seattle Sounders beat D.C. United 1-0 on Saturday night.
The hosts get ready for the knockout round with a high-profile clash against Chile.
Despite criticism from USMNT fans, midfielder Michael Bradley has the support of his coach Jurgen Klinsmann.
The Black and Red will see how they measure up against the best team in the Western Conference on Saturday. Coverage begins at 6:30 on CSN.