Tottenham defender Toby Alderweireld admits they face Chelsea today at the top of their game.

But the Belgian says they expect a "tough" derby.

Alderweireld, whose side had only one day to prepare following their Europa League win over Qarabag in Azerbaijan on Thursday, said: "We are in the zone now - everything is going well. That gives us confidence and makes us forget about any tiredness.

"But it is going to be tough because Chelsea are starting to play well again now. If we want to be at the top of the league we have to win these games at home."