Our USL champion Seattle Sounders take on MLS-side Chivas USA Tuesday night in the third round of the US Open Cup. Tickets are on sale now for the 7:00 p.m. kickoff at Starfire Sports Complex in Renton. Due to the limited space at Starfire and anticipated demand, advanced ticket purchased is strongly suggested. Chivas USA is coached by Preki Radosavljevic, and Seattlest can't type that enough, really. Also, note to local photogs: The Seattlest Flickr......