Nope, that was the Cosmos of the North American Soccer League (also Chinaglia)... known as the best team money could buy. The Rowdies, Sounders, Whitecaps were other teams in the NASL which essentially disappeared in the mid '80s - later to be reborn as Major League Soccer which still isn't doing too well. Soccer's popular but not as a professional sport... there just aren't enough people willing to pay professional sport ticket prices to see it.
I'm an ex-Seattle Sounder fan... we were lucky to get 3,000 people in the Kingdome.