The Sounders' win at Vancouver still leaves them in third place in terms of points, but within two of Dallas and one of the Whitecaps. However, San Jose and even Houston stand within three points of the Sounders.
Equally fascinating, Los Angeles, Real Salt Lake and Portland all stand below the red line.
Meanwhile, the Sounders have a game in hand on Dallas and two on Vancouver.
The coming weekend has the Sounders meeting sixth-place Sporting Kansas City at 7 p.m. Saturday at CenturyLink Field -- their first of three straight home games and the first of a five-out-of-six home stretch.