John Terry's second-half header prevented Tottenham manager Andre Villas-Boas from claiming victory over Chelsea in a hot-tempered grudge match against former mentor Jose Mourinho.
The pre-match fireworks between the two managers had given an extra edge to what was already one of the most hotly-contested derbies in English football, and for the most part the game lived up to its billing.
Tottenham dominated the first half and took the lead through Gylfi Sigurdsson, but Terry - one of the personalities with whom Villas-Boas clashed at Chelsea - gatecrashed the Spurs boss' party to leave the score at 1-1.
Tempers often frayed during the match. Fernando Torres was sent off for two bookings - the last of which was a questionable one in which he was penalised for throwing an elbow at Jan Vertonghen when replays showed there was no contact.
The Spaniard could have been given a straight red for scratching the defender's face.
Villas-Boas and Mourinho had been practically inseparable f...