SAN JOSE — Dwayne De Rosario set up all of San Jose's goals and the Earthquakes beat Chivas USA for the first time this season, 3-0, on Saturday.
Chivas, an expansion club, had tied the current Western Conference leaders, 3-3, on April 9 and, 1-1, on June 12.
But this time Chivas couldn't rebound from second-half goals by Mark Chung, Ricardo Clark and Brian Ching.
Chivas (3-19-5), which along with fellow first-year club Real Salt Lake has not won a road game, played a competitive and scoreless first half.
Only 1 minute 12 seconds after halftime, De Rosario passed between the legs of defender Ezra Hendrickson to Chung, whose shot deflected off defender Douglas Sequeira and into the net.
Before scoring, Clark missed on a variety of long-range blasts, including a 28-yard shot that Sergio Garcia saved in the 26th minute.