'We go with a back three for a reason': Tuchel explains team choice v Tottenham

"We go with a back three for a reason, with Reece [James] to match the speed of Son Heung-Min. Ruben [Loftus-Cheek] played at wing-back in the preseason and in many matches in the last few seasons," Thomas Tuchel has told Sky Sports.

"I think you need five to defend the aggressive wing-backs of Tottenham," he added.

The presence of Ruben Loftus-Cheek came as a shock for many, yet he's going to play a very important role tactically today.

Marc Cucurella is making his debut starting appearance for Chelsea, by the way.