Eddie Johnson found the net twice and Lamar Neagle added a goal and an assist Saturday in the Seattle Sounders' 4-2 win over FC Dallas.
Mauro Rosales notched the equalizer for Seattle in the 64th minute Saturday, handing the Sounders a 2-2 draw with Philadelphia.
Substitute Rodney Wallace scored during second-half stoppage time Saturday, salvaging a 1-1 for the Portland Timbers against Seattle.
Davy Arnaud netted the only goal of the game in the first half Saturday, boosting the Montreal Impact to a 1-0 season-opening decision over Seattle.
The Los Angeles Galaxy will meet the Houston Dynamo in a rematch of last year's MLS Cup after closing out a 4-2 aggregate win over Seattle Sunday.
Eddie Johnson's second goal Friday, coming on a header in stoppage time, lifted the United States to a 2-1 World Cup qualifying win over Antigua and Barbuda.
Eddie Johnson and Fredy Montero each scored Sunday and the Seattle Sounders blanked Portland 3-0 in front of 66,452 fans at CenturyLink Field.
Eddie Johnson scored two goals Saturday and the Seattle Sounders moved up in the Western Conference with a 2-1 win over Chivas USA.
Fredy Montero and Eddie Johnson each scored in the second half Saturday, boosting Seattle to a 2-0 win over Vancouver in the Cascadia Cup contest.
Fredy Montero and Alex Caskey scored 9 minutes apart in the second half Sunday and Seattle routed Los Angeles 4-0 before 60,908 fans at CenturyLink Field.