The Colorado Rapids defeated the Portland Timbers 1-0 on Saturday to secure a berth in the MLS Cup playoffs, as the LA Galaxy's postseason participation was also guaranteed.

Sebastian Le Toux scored the only goal of the game for the Rapids in the 63rd minute at Dick's Sporting Goods Park following good work by Marlon Hairston.

Colorado is now assured of a first playoff appearance since 2013, with rival Sporting Kansas City having lost 3-1 at New England.

That result, sealed by strikes from Kei Kamara and Juan Agudelo in the first and second half respectively, together with a Kevin Ellis own-goal, kept the Revolution's slim postseason hopes alive.

Walker Zimmerman headed home Mauro Diaz's corner in the 39th minute as Western Conference leader FC Dallas saw off the Galaxy 1-0 at Toyota Stadium, but, thanks to results elsewhere, the beaten visitors are now also assured of a role in the playoffs.

The New York Red Bulls held off the Philadelphia Union to win 3-2 and regain control in the race for the Eastern Conference's coveted top two, Bradley Wright-Phillips on target to join New York City's David Villa on 21 goals in the running for the golden boot.

Lamar Neagle scored both goals as D.C. United came from behind to beat Toronto FC 2-1, while the Columbus Crew eased to a 3-0 win over the Chicago Fire.

The San Jose Earthquakes saw off Real Salt Lake 2-1 at home.