Clint Dempsey struck two minutes into injury time for Tottenham to secure a 1-1 draw against Manchester United at White Hart Lane.
Robin van Persie had put the league leaders 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 equalizer with less than 60 seconds of the match remaining.
"Before (this season) I'd never scored against them, so it's good to help the team get results," said Dempsey, who sent Tottenham to its first win at United in 23 years in September. "We've got a win and a draw now (against United)."
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.
United barely had a touch in the first 10 minutes, but De Gea remained untested. Scott Parker raided the United midfield to win the ball and drive at goal, but he could only curl over the bar.
Dempsey should have equalised in the 52nd minute when he picked up Mousa Dembele's pass following a mazy run by the Belgian, but De Gea saved with his legs.
Sir Alex Ferguson then aimed his ire at Chris Foy after the referee failed to award United a penalty when Wayne Rooney, who had come on after 60 minutes, went down in the Spurs box.
And with two minutes and four seconds of the three added minutes gone, Dempsey popped up in the box and stabbed home after De Gea had flapped at a cross.
Information from Press Association and The Associated Press was used in this report.