Charlie Davies and Teal Bunbury each scored and the New England Revolution then held off the previously unbeaten Red Bulls 2-1 on Saturday night.
Davies gave the Revolution (5-2-2) an early lead with a diving header in the ninth minute, finishing from just inside the 6-yard box on London Woodberry's cross.
Lee Nguyen and Scott Caldwell's nifty two-pass combo freed Bunbury to double the lead with a right-footed strike in the 60th minute.
The Revolution improved to 17 points, putting them in a tie for first in the MLS with FC Dallas and D.C. United.
Sacha Kljestan pulled the Red Bulls (3-1-4) within one in the 73rd minute, dribbling past New England goalkeeper Bobby Shuttleworth and finishing into the open net.
The Red Bulls had been the last unbeaten team in MLS.