Make no mistake, CenturyLink Field's expansion was not made with the Seattle Sounders in mind. The 1,000 seats being added to the South End are being paid for by the Seattle Seahawks and they'll be the ones enjoying most of the benefits. There's even a line of thinking that suggests that at least part of the reason there's not new turf going in this offseason is because of the construction currently underway.
But there is at least one potential benefit for the Seattle Sounders: Those seats will be available for full-stadium games, bringing capacity to about 69,500. The current single-game MLS attendance record is 69,255, set in the first week of the league's inaugural season of 1996, between the Metrostars and the Galaxy.
Some Sounders fans have understandably grown weary of the constant talk about attendance, but this is the one record the team doesn't already hold. The Sounders' previous high attendance was 67,385 against the Portland Timbers on August 25, 2013, which is still the second highest single-game attendance in MLS history. The additional CenturyLink Field seats should be ready for the second of this year's home games against the Timbers on August 30th, a Sunday, at 2:00pm. Being able to set it in the league's 20th year, possibly in a game against their biggest rivals, would be a fitting accomplishment.