SEATTLE, WASH. – Seattle Sounders FC is set to open CenturyLink Field to its full capacity Sunday evening for a home Cascadia Cup clash against the Portland Timbers (6:30 p.m. PT / FS1, KIRO Radio 97.3 FM, El Rey 1360 AM), presented by Alcatel, the official smartphone partner of Sounders FC. Sunday’s pre-match ceremonies include a Golden Scarf presentation by former honorees Kasey Keller and Michelle Akers to Washington Youth Soccer in honor of its 50th anniversary, with the pair representing the first half-century of the organization, symbolically passing the torch to the next generation of athletes, including Akili Kasim and Kaylene Pang, both of whom recently represented Washington at the U.