Four days after beating Vancouver away for the Cascadia Cup, the Sounders secure passage to the Concacaf Champions League knockout round by blanking the Whitecaps, 3-0, at CenturyLink Field. Lamar Neagle's goals 15 minutes apart both come off assists from Chad Barrett and Nelson Valdez, who gets the other goal. Seattle finishes 2-1-1 vs. Vancouver and Olimpia to win the group. It's the fourth win in five games across all competitions.

Seattle all-stars defeat Victoria Fragments of France (Canadians who fought in WWI), 4-2, before overflow crowd at Seattle's Liberty Park. Proceeds benefit the Overseas Club which cares for returned soldiers and sailors.

Bethany Balcer comes off the bench to scoring the deciding goal in added time, giving OL Reign a 1-0 win over Utah in third match of the NWSL Challenge Cup in Herriman, Utah. It's the first goal scored by the Reign after being blanked by Sky Blue (0-0) and Houston (0-2). Balcer enters in the 67th minute and in the first minute of added time she connects with a Nicole Momiki cross. Michelle Betos makes five saves for the shutout.

Jordan Morris sends FC Dallas out of the MLS Cup playoffs with a dramatic extra-time goal, his third of the match, sending Seattle on to the seconds round, 4-3, at CenturyLink Field. It's the first postseason hat trick in any era of Sounders history, going back to 1974. Raul Ruidiaz, scorer of the opening goal, has his shot blocked in the 113th minute, but Morris nods in the loose ball. He scores in the 22nd and 74th minutes. It's his first professional hat trick and the most combined goals for Seattle in MLS postseason history.

Reign FC rebrands as OL Reign FC, signifying the NWSL club's new majority owner, France's OL Groupe. It's the third iteration of the Reign, known as Seattle Reign from 2013-2018. The rebranding also features a new color scheme – red, white and blue – and a badge featuring a lion, again consistent with OL Groupe's Olympique Lyonnais men's and women's teams.

Although the club has passed into history, the 2011 PDL champion Kitsap Pumas are bestowed immortality with induction to the Kitsap Sports Hall of Fame. Also honored at the Poulsbo banquet is Pumas owner Robin Waite, who received the Rex Brown Distinguished Service Award. Representing the 2011 team are coach Peter Fewing and former executive director Ben Pecora.