Clint Dempsey delivers a brace and assist – all in the first 20 minutes – and the Sounders clinch a playoff berth for the seventh straight year with a 3-1 Decision Day home win over Real Salt Lake. A crowd of 55,435 fans at CenturyLink Field breaks the MLS season attendance record again, with an average of 44,245. Dempsey scores in the fifth and 20th minutes, with Marco Pappa striking in the 10th.

Freshmen Jana Wilson and Katey Ward each score in their first Apple Cup meeting with Washington State, helping the Washington close-out the regular season with a 2-0 victory in Pullman. The Huskies earn their highest finish in the Pac-10, tying for second place, and the NCAA includes them in the tournament field for the third straight year. It's the third straight UW win over WSU in the series. No. 3 Portland eliminates Washington in the first round. Seven of eight losses are inflicted by ranked opponents.

Lake Washington Youth Soccer breaks ground on a $1.6M project that includes nine new fields plus other amenities at Sixty Acres South. By summer 2010, the entire complex will total 25 fields, making it the biggest soccer facility west of the Mississippi. The first 16 fields have been leased and operated by LWYSA since 1984.

Tamara Browder makes a record 14 saves, and Washington upsets Michigan State, 2-1, on Emily Thompson’s goal in the fourth minute of overtime at Lansing. Christine Keeley puts the Huskies in front in the 28th minute before the Spartans tie it before halftime. Keeley assists on Thompson’s score. Browder stops eight first-half shots, five in the second period and another in extra time. MSU out-shoots UW, 24-9.

A crowd of 29,105 celebrates the Soccer Bowl ’77 runners-up and while the victory over Colorado, 3-0, is the club’s best season-opening performance, it’s marred by the loss of stalwart center back David Gillett. A four-year starter in his prime, Gillett had scored the game’s first goal sustains compound fracture of his left leg in collision with Matt Bahr and is out for the season.

Sounders scoring king Raul Ruidíaz's departure is made official when the club's season-ending roster determinations are released, making him a free agent. GM Craig Waibel states Ruidíaz “left a lasting legacy.” Since coming to Seattle in June 2018, he scored a record 86 goals across all competitions, including braces in the 2019 MLS Cup semifinal and final as well as the 2022 CONCACAF Champions Cup final. After scoring seven goals through 12 games, he was briefly suspended for a locker room outburst following the June 22 win over Dallas in which he scored his final goal.