Already having sold about 60,000 prior to the signing of Clint Dempsey, the match against the Portland Timbers officially sold out today. Not a technical sell-out, a complete and utter sell-out. So, Seattle Sounders FC added 400 seats and are selling standing room only tickets. Those SRO seats are a first-ever in Sounders FC history.

The largest crowd in the history of CenturyLink Field is 68,331 for a Seahawks-49ers game. The expanded capacity will approach that number depending on the quantity of standing room only seats. The highest attended stand-alone game in MLS history was in 1996 when 69,255 saw the LA Galaxy play the New York MetoStars.

Welcome to the era when, for one game only (so far), an NFL stadium is not big enough for MLS soccer.