New England (5-4-4) scored four times in the second half to win going away, pulling even with fifth-place Philadelphia in the Eastern Conference standings.
Saer Sene scored his first goal since returning from a torn knee ligament. Lee Nguyen and Chad Barrett also registered goals for the Revs.
Los Angeles (6-5-2) was without Robbie Keane and Omar Gonzalez, who were playing with their national teams.
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