[D-2 PRO LEAGUE] The Vancouver Whitecaps won the series between future MLS teams when they held on to defeat the Portland Timbers, 2-1, on aggregate despite losing Sunday's second leg, 1-0, before 4,884 fans at the University of Portland's Merlo Field.
James Marcelin scored on a header off a pass by Ian Joy for the game's only goal in the 49th minute.
Vancouver will meet Puerto Rico in one semifinal. Defending champion Montreal will meet Carolina in the other series.
Carolina, third in the overall standings, was the only higher seed to win their series.
SATURDAY: The Rochester Rhinos and Austin Aztex, who finished 1-2 in the overall standings during the regular season, fell.
Puerto Rico, which had beaten the Rhinos, 2-0, in the first leg got an early goal from Alexis Rivera to go ahead on aggregate, 3-0, and that proved to be the difference as the Rhinos could only pull two goals back and lost the series, 3-2.
In Austin, Ali Gerba scored twice to give him four goals in two games and lead Montreal to a 3-2 win over the Aztex and advance to the semifinals, 5-2, on aggregate.
Carolina broke a scoreless deadlock in its series with the NSC Minnesota Stars by scoring four second-half goals and winning, 4-0.