Tottenham's Premier League title challenge suffered a crushing blow as Ashley Barnes' late strike sealed a shock 2-1 win for Burnley that ruined Harry Kane's goal-scoring return on Saturday.
Mauricio Pochettino's side would have moved within two points of leaders Manchester City with a win at Turf Moor.
But they squandered the chance to enhance their title prospects with a sloppy display that saw Chris Wood put Burnley ahead after half-time.
There was controversy about Wood's goal as it came from a corner that Tottenham felt shouldn't have been given.
But Pochettino's men had a break of their own when Kane, back after missing seven games with an ankle injury, capitalised on a throw-in that was taken in the wrong place.
At that stage, Tottenham looked poised to push on for a fifth successive league victory.
However, they paid the price for sloppy defending as Barnes struck with seven minutes left to extend Burnley's unbeaten league run to eight matches.