Ethan Finlay and Kei Kamara scored and the Columbus Crew beat D.C. United 2-1 on Saturday night.
Tyson Wahl outdueled Sean Franklin for a ball deep in United territory and poked it to Finlay, who shielded a defender inside the 6-yard box before blasting a left-footer past Bill Hamid to give Columbus a lead in the 27th minute.
Kamara, who leads MLS with 21 goals, raced behind the defense and put away a pass from Tony Tchani to make it 2-0 about two minutes into the second half.
A handball in the box by Chris Klute set up a penalty by Chris Rolfe that pulled D.C. United within one in the 68th minute, but a later goal called off for offsides and two other opportunities were just off the mark.
Andreas Ivanschitz and Gonzalo Pineda scored their first goals of the season, Obafemi Martins added his 13th and the Seattle Sounders beat the Vancouver Whitecaps 3-0 to wrap up their fourth Cascadia Cup title.
The Sounders opened the scoring in the 45th minute when Martins set up Ivanschitz for a shot that went between goalkeeper David Ousted's legs.
Pineda scored in the 71st minute, and Martins sealed it in the 87th minute with his fourth goal in four games.
The Cascadia Cup is a regional head-to-head competition between Seattle, Vancouver and the Portland Timbers. The Whitecaps needed a victory to claim their third straight trophy in the competition.
Devon Sandoval scored twice and Javier Morales converted a penalty kick as Real Salt Lake beat the LA Galaxy, 3-0.
Sandoval opened the scoring in the third minute with a left-footed shot from the left side of the 6-yard box to inside the far post, finishing Aaron Maund's headed pass. Sandoval capped the scoring in the 53rd, stretching up for a header from the middle of the box off Juan Manuel Martinez's cross.
Morales converted from the spot in the 28th minute for RSL, which kept its playoff hopes alive by moving within three points of sixth-place Portland in the Western Conference. The Galaxy remained tied with FC Dallas for second place.
Didier Drogba, Johan Venegas and Dilly Duka scored and the 10-man Montreal Impact beat New England 3-0 in a driving rainstorm to end the Revolution's winning streak at six games.
The Impact are unbeaten in four games since Mauro Biello replaced Frank Klopas as coach. They are sixth in the Eastern Conference, two points ahead of New York City FC for the final playoff spot.
Montreal went down a man in the 72nd minute when Marco Donadel, already on a yellow card, slid into defender Andrew Farrell. But only four minutes later, Drogba slipped a pass to Duka on the left side to pad the Montreal lead. It was the first MLS assist for Drogba, who has four goals in four games.
The Impact struck early as Ignacio Piatti dropped a pass to Venegas for a shot that went off defender Steve Neumann's leg and took a dip over Bobby Shuttleworth in the fifth minute. In the 59th minute, Drogba drew a free kick and then scored on a shot that went in off the chest of New England midfielder Kelyn Rowe.
Sebastian Giovinco continued his fine scoring form with two goals and an assist in Toronto FC's 3-1 victory over the Colorado Rapids on Saturday.
The game began in sunny conditions and ended with sheets of rain billowing in off Lake Ontario.
Giovinco, who has 19 goals in 28 games in his first MLS season, scored his first goal in the 14th minute at the end of a 40-yard run, with his shot from outside the box finding its way under Rapids keeper Clint Irwin.
He added a second goal four minutes later with a curling shot from the top of the 18-yard box.
Giovinco then turned provider for Damien Perquis to scored for Toronto, though Dillon Powers brought one back for Colorado soon after.
Ned Grabavoy scored two second-half goals and added an assist to help New York City FC beat the San Jose Earthquakes 3-2.
Grabavoy scored in the 51st and 63rd minutes for his first two goals of the season. David Villa scored another goal with an assist by Grabavoy two minutes later and New York City lead 3-0.
Quincy Amarikwa scored in the 72nd minute for the Earthquakes. Chris Wondolowski scored off a penalty kick in the 76th minute to cap the scoring and match NYCFC coach Jason Kreis as the fifth-highest scorer in MLS history.
NYCFC has won consecutive games since snapping a three-game losing skid. San Jose is winless in its past four games and remain one point out of the final postseason spot in the Western Conference.
Bryan Rochez scored in the 86th minute and Orlando City escaped with a 1-0 victory over the Chicago Fire.
Orlando's scoring opportunity started with a Fire giveaway on Razvan Cocis's errant back pass. Brek Shea retrieved it for Orlando on the right flank and crossed it in to Darwin Ceren, who laid it off for Rochez's quick-hitter.
It was a fortunate turn of events after Orlando struggled all game to hold possession in the midfield. Kaka missed his third consecutive match with a thigh injury suffered during international duty.
Tally Hall made a pair of crucial saves late in the first half and earned his fifth shutout of the season. Jon Busch had four saves in place of the injured Sean Johnson and narrowly missed a clean sheet for Chicago.