Seattle Sounders extended their lead at the top of the MLS Western Conference with a thumping 4-0 win over closest challengers Real Salt Lake. Gonzalo Pineda put the hosts ahead with a 42nd-minute penalty and Marco Pappa doubled the lead ten minutes after the break.
Chad Barrett added a third in the 62nd minute to end the hopes of last year's losing finalists in the MLS Cup before Obafemi Martins completed the rout at the death. The win moved Seattle five points clear of their opponents.
Eastern Conference leaders New England Revolution lost 2-0 to Montreal Impact, whose goals came from Andres Romero (three) and Issey Nakajima-Farran (40). DC United closed the gap at the top to two points with a 1-0 home win over Sporting Kansas City which saw them leapfrog their opponents. Fabian Espindola scored the only goal of the game in the 28th minute.
Jermain Defoe scored twice in Toronto FC's 3-2 win over Columbus Crew. The former Tottenham Hotspur striker cancelled out Justin Meram's opener with a 21st-minute penalty and then made it 2-2 in the 81st minute after Agustin Viana had restored the Crew's lead. Toronto completed their comeback as Doneil Henry netted the winner in the 90th minute.
Conor Casey also scored twice, one a penalty, to help Philadelphia Union win 3-0 at Chivas USA. Cristian Maidana was also on target for the visitors, while Chivas finished the match with ten men following the late dismissal of Oswaldo Minda.
San Jose Earthquakes won 2-1 at ten-man FC Dallas. Blas Perez put Dallas in front after 16 minutes, but Atiba Harris levelled in the 27th minute and things got worse for Dallas when they had Adam Moffat sent off ten minutes later. Jean Pierazzi scored the winner on the stroke of half-time.