Mauro Biello justifies his decision to keep Didier Drogba out of the 18 for Montreal against Toronto FC.
A tight match between Houston and LA was decided by a lone opportunistic goal from Alan Gordon ahead of the playoffs.
RSL missed a chance to clinch their postseason berth, while SKC remain in the final playoff spot, as the two sides drew.
Both San Jose and Vancouver cannot make the playoffs, and it showed in a fairly tepid match that had little chances for glory.
Dallas scored two late goals to topple Seattle, and keep a firm grip on first place in the Western Conference.
In a hectic penultimate matchday in the 2016 MLS regular season, D.C. United and the Montreal Impact booked their tickets to the postseason.