The 2009 Portland Timbers season was the ninth season for the club in the United Soccer Leagues First Division (USL-1), the second tier of the United States soccer pyramid. The first competitive game of the 2009 season was played on April 25 at Swangard Stadium in Burnaby, BC versus Vancouver Whitecaps FC which the Timbers lost 1–0. Following that loss the Timbers went on a 24-game unbeaten streak in the league on their way to securing the Commissioner's Cup for finishing the regular season atop the table. In a hard-fought, two-legged series, Vancouver Whitecaps FC knocked Portland out of the playoffs in the semifinals by an aggregate score of 5–4. In the U.S. Open Cup the Timbers hosted Seattle Sounders FC of Major League Soccer in the third round but were eliminated by their bitter rival