Seattle leaders invite the U.S. Soccer FA to hold its 39th AGM in the city in 1955. It’s part of a move to lure U.S. Olympic Team trials in 1956. William T. Hobson, chair of the bid committee, believes Seattle is a natural departure point for the U.S. team to depart for the Olympics in Melbourne, Australia.

Born in Birmingham, England, Vancouver, B.C. transplant and Boeing engineer Jack Goldingay starts the Eastside's first youth program through the Bellevue Boy Club. There are four teams. By 1962, it grows to more than 300 players.

It may be an anniversary season but a 2-1 defeat at D.C. United officially gives the 10-man Sounders their worst start (1-5-3) over that half-century. They fall to 13th in West, 27th in the league overall. Seattle snaps a two-match scoreless stretch when Leo Chu scores the opener. Stefan Frei is sent off on a penalty call, but the red card is subsequently overturned the following week.

For the second time in eight days, Seattle Reign strikes first in Portland, only to have the Tobin Heath, Lindsey Horan and the Thorns overtake them. After finishing the regular season against their rivals, the Reign return for their NWSL semifinal and fall, 2-1. Jasmyne Spencer stakes Seattle to a lead, but Heath replies just before the interval. Horan, the league MVP, scores her fourth goal of the season vs. the Reign in the 77th minute. Christine Sinclair's cross meets Horan's forehead and the ball deflects off the post and into the net.

No. 19 Western Washington posts a third consecutive shutout to clinch its first GNAC men's championship since 2008, 1-0 over Montana State Billings in Bellingham. With the title comes the second NCAA berth since 2016. Jeremiah Lee first-times a low volley from 6 yards off a corner from Georg Cholewa. The same day, Pacific Lutheran books its place in the Division III postseason by downing Puget Sound, 2-0. The Lutes had shared the NWC title the previous two seasons. Keeton Heggerness opens the scoring in the ninth minute and Jackson Moore tallies 15 minutes later.

Michael Collins's free kick 3:19 into overtime gives the Seattle SeaDogs a victory, 6-5 over San Jose, in their inaugural CISL game before 3,529 at the Center Arena. Vasco Rubio ties the score with two minutes left in regulation after Seattle pulled its goalkeeper for a sixth attacker. Wearing their purple and green uniforms, the SeaDogs players enter the Arena through a 27-foot inflatable mascot bulldog, spotlights and artificial fog.