 On August 26 , 2010 , U.S. Soccer announced the potential sites for the final , depending on the outcome of the semifinals . It was determined that if Seattle qualified for the final , they would host it at Qwest Field regardless of the opponent . If Chivas USA defeated Sounders FC in the semifinals , they would host the Columbus Crew at The Home Depot Center in Carson , California , or visit D.C. United at RFK Stadium in Washington , D.C. , depending on the outcome of the other semifinal match . Since Columbus and Seattle advanced from the semifinals , the final was held at Qwest Field in Seattle . This was the first U.S. Open Cup final to be played in the state of Washington . 
