(Tukwila, WA)  --  The Portland Timbers are back on the pitch tonight.  Portland takes on the Seattle Sounders in the US Open Cup from Tukwila, Washington.  The Timbers have won three straight matches following a 2-0 victory over New England on June 6th.  The Timbers are 6-5-and-4 with 22 points this season.  Opening kick set for 7:30.