The Manchester United legend admits he's in awe of the Sounders support.
"To have a franchise like Seattle that sells out more than 35,000 week in and week out, that's special," Beckham told The Seattle Times. "That only usually happens in Europe.
"It does lift the whole game here in the States.
"You have a sold-out stadium every week. The atmosphere there is great. It's what every franchise will always want and hope for."