The Colorado Rapids will be without goalkeeper Matt Pickens for three to four months after he broke his left forearm in a collision against Real Salt Lake on Saturday.
Jack McInerney scored in the 79th minute as the Philadelphia Union defeated the Colorado Rapids 2-1 on Sunday.
Alvaro Saborio and Will Johnson both scored and Real Salt Lake beat the Colorado Rapids 2-0 Saturday night.
The Seattle Sounders got back into the win column for the first time in two months, and Steve Zakuani got back into a game for the first time in more than year.
Dwayne De Rosario scored in the first half, and Hamdi Salihi added his first goal at RFK Stadium in the second to help D.C. United beat the Colorado Rapids 2-0 on Wednesday night.
Matt Pickens had his third shutout of the season to tie the Colorado record of 25, and the Rapids beat Chivas USA 4-0 on Saturday night to snap a three-game losing streak.