Chelsea manager Jose Mourinho suffered a chastening defeat as Tottenham Hotspur stunned his side 5-3 on Thursday to leave them joint-top with Manchester City in the Premier League.
Mourinho's side began 2015 in nightmare fashion as Tottenham ran riot in an absorbing eight-goal London derby thriller.
Chelsea began the day as clear leaders, but ended it level pegging with defending champions City.
Few would have predicted this result, especially when Diego Costa opened the scoring. But Harry Kane equalised before a three-goal blitz swung the game in Tottenham's favour.
Danny Rose, Andros Townsend's penalty and Kane, again, all scored in a seven-minute spell either side of half-time.
Eden Hazard hit back, but Nacer Chadli killed off the visitors' hopes by scoring for a rampant Tottenham late on. John Terry rounded off the scoring, but it was scant consolation for Chelsea.After the match, Mourinho admitted that his defence had made mistakes but bemoaned his side's bad luck and pointed the finger at referee Phil Dowd for not awarding a first-half penalty for a handball by Jan Vertonghen while the Blues led 1-0.