In a marathon match at Highline Stadium, Tacoma Heidelberg ousts shorthanded Seattle Heidelberg in the second round of the National Challenge Cup. Roger Goldingay scores five goals for Seattle, who lose Heinz Ritter to a red card for striking referee Ben Patterson. It's 2-2 after regulation,4-4 after the first overtime and 6-6 after a second extra period. In penalties Allen Robinson converts the decisive shot (3-2) and Tacoma advances to face Olympia Vikings, who defeat Rainer Brewing in the other Northwest semifinal.

Sounders FC and the Seahawks announce their business operations will become independent beginning April 30. The teams have shared business operations since Sounders FC was admitted to Major League Soccer in 2007. The club’s new headquarters will be in Pioneer Square, just north of CenturyLink Field.

Legendary goalkeeper Kasey Keller joins the ownership group of USL League One's Athletic Club Boise, set to debut in 2026. Keller owned a second home in Idaho since 2005.

Preki's three-week hold out from Tacoma Stars preseason training ends with an agreement on a new deal. The reigning MVP, Preki was demanding the MISL maximum $90,000 while the Stars offered $83,000. The salary is for eight months, allowing Preki to pursue other opportunities during the offseason. The previous season he was paid $78,000 while the club paid $12,000 to his former Portuguese team as part of a buyout. The agreement comes three weeks before Tacoma begins the regular season.

Joining most all sports leagues following the terrorist attacks in New York and Washington, D.C., Major League Soccer commissioner Don Garber announces that all remaining regular season matches have been canceled and will not be rescheduled. MLS will go ahead with the playoffs, with the first round to begin Sept. 20. USL A-League playoffs are delayed a week, until Sept. 19. The Seattle Sounders' season ended Sept. 8 without qualifying for the playoffs. The entire airspaces of the United States and Canada were closed to civilian air traffic by the FAA on Sept. 11 and were not allowed to resume until Sept. 13. The backlog of delayed passengers took several days to clear.

A brace from Karmen Koteles fuels the Hungarians' 4-1 win over E&E Meats (6-2-0) and secures the Puget Sound Navigation trophy for the second half. E&E had only allowed six goals beforehand. Buchan (5-0-3) takes second.The Magyars (7-0-1/56-11 GD) will face the Vikings (5-2-1), first-half victors, in the state league final.