Zach Thornton, Jean Philippe Peguero, Ned Grabavoy, Pat Noonan (MLS/WireImage.com)

Final four contestants set for next round

There were a number of surprises and exciting matches in the second leg of the Conference Semifinal Series. The Revs rallied from two goals down to beat the MetroStars, Colorado outlasted FCD in penalty kicks, Los Angeles held off San Jose, and Chicago thumped D.C. United at RFK Stadium.

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