Clint Dempsey scored a late equaliser for Tottenham to deny Manchester United victory at White Hart Lane.
The Spurs forward scrambled the ball over the line in time added on, to leave Sir Alex Ferguson's side only five points ahead of Manchester City at the top of the Premier League table.
Robin Van Persie had put United on course for a vital win when he scored his sixth goal against Spurs but, after a sustained period of pressure, Dempsey delivered Andre Villas-Boas' men a thrilling equaliser with less than 60 seconds remaining.
The American, who had missed a gilt-edged chance earlier in the second half, got on the end of Aaron Lennon's pull-back and slotted home after David De Gea had gone walkabout.
For most of the game, Van Persie's brilliance had once again looked as if it would gloss over any United weaknesses, with the solidity of Rio Ferdinand and Nemanja Vidic at the heart of the defence equally impressive.
United goalkeeper David De Gea also shone, keeping his side in the game time and again during a second-half bombardment, only to fail to punch clear in the lead-up to Tottenham's equaliser.
The draw means United are now just five points ahead of Manchester City after Roberto Mancini's men after their win over Fulham on Saturday.
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Chelsea 2-1 Arsenal
Chelsea dispatched Arsenal 2-1 at Stamford Bridge to pull 11 points clear of their rivals in the race for the Champions League places.
Juan Mata drove in a shot to put the Blues in front, although the visitors could justifiably claim there had been a foul against them in the build-up.
Keeper Wojciech Szczesny brought down Ramires and Frank Lampard scored from the spot for Chelsea's second.
The visitors were much improved after the break, creating three good opportunities before Walcott sprung the Chelsea off-side trap after 58 minutes.
Santi Cazorla threaded the ball through to the 23-year-old, who opened up his body to fire it magnficently past the grasp of Petr Cech to give his team a life-line.
Wenger’s side showed heart and fight to make a game of it in the second half but they were ultimately made to pay for a feeble first-half showing in which they were comprehensively out-played and out-thought by the hosts.
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