A few weeks ago, D.C. United’s Dwayne De Rosario beat the club that had just traded him. On Saturday night, he inflicted the damage on the team that launched his exceptional MLS career 10 years ago.

With superbly struck goals 10 minutes apart, De Rosario lifted United to a 2-0 victory over the San Jose Earthquakes at Buck Shaw Stadium in Santa Clara, Calif.

United (6-6-8) extended its away unbeaten streak to six matches (3-0-3), dating from late April, and avenged a 4-2 loss to the Earthquakes in Washington in June.

DCU, 4-3-3 on the road but just 2-3-5 at home, will play its next two matches at RFK Stadium, against two of the worst teams in MLS: Toronto FC and the Vancouver Whitecaps.

De Rosario, acquired in late June, scored against his previous team, the New York Red Bulls, for a 1-0 victory July 9. On Saturday, he struck in the 57th and 67th minutes against a club for which he helped win two MLS Cup titles.

Andy Najar received a red card in the 70th minute and will miss the Toronto match next Saturday. Bill Hamid made a late save on Chris Wondolowski to earn his fifth shutout.