If the afternoon had started badly for Chelsea with Frank Lampard's second match-winning goal of the season for their title rivals Manchester City, it was safe to say it was about to get a lot worse. Jose Mourinho had never before lost a game to Tottenham and this was some way to have his record broken, going down 5-3 at White Hart Lane.
When the fifth Spurs goal went in, the defiance of the Chelsea manager slipped. Until then he had been berating the fourth official Andre Marriner and rearranging his team, but even he had accepted by then that this had been a rotten few days in the English Christmas football programme he claims to love so dearly: two points dropped at Southampton and now a rare defeat at the hands of a despised local rival.
Chelsea's spell of dominance has been broken for now and they lead the Premier League on little more than the rule of alphabetical order: their record is identical to that of Manchester City right down to goals scored and conceded. Mourinho has refused to change his team and this time they looked jaded, not least the big hitters such as Diego Costa and Cesc Fabregas, who found themselves outplayed by a vibrant, attacking Spurs team.
After such an indifferent start to the season, Mauricio Pochettino must take great credit for his club's first win over Chelsea since April 2010 and his first over Mourinho as a manager. Their attacking spirit was embodied by Harry Kane, whose two goals take him to 17 for the season and mark the further emergence of an unorthodox but beguiling English talent.
It was the kind of game you might expect at the end of a draining Christmas run of matches, and it was compelling entertainment.