It took the Blues 12 minutes to break the deadlock as Willian played a one-two with Kovacic from a corner before cutting into the box and curling a brilliant effort into the far bottom corner.
The Brazilian came back to haunt Spurs once more with an absolutely brilliant finish to give the away team the lead, his first Premier League goal against Spurs in what is his 12th appearance against them in the competition.
Spurs had a couple of chances through Kane and Son but didn’t trouble Kepa. Then in added time, Gazzaniga brought down Alonso with a really poor challenge and VAR awarded a penalty which Willian cooly converted.
Willian’s penalty was Chelsea 100th Premier League goal against Spur – in the history of the competition, only Manchester United against Everton (101), Liverpool against Newcastle (101) and Arsenal against Everton (107) have scored more goals against a single opponent.
62 minutes on, Spurs were reduced to ten men. VAR had a long look at an incident between Son and Rudiger and had to overturn the referee’s decision.
That win ends Chelsea’s two-game losing run and means that they stay in the top four heading into Christmas.