Chelsea player ratings vs Luton: Sarr poor, Loftus-Cheek steps up, Saul good, Werner finds form

Handed the chance to put his Carabao Cup final disappointment behind him, Kepa conceded inside the opening two minutes as Reece Burke glanced home a header from a corner. The Spaniard could do little about the goal, nor Harry Cornick's that followed later in the first half.

He did make an important stop from Dan Potts and was one of the few players not to look mentally overawed by the occasion. But he wasn't overly busy at Kenilworth Road.

Chelsea's aggressive leader was one of just two players to keep their place after the Carabao Cup final, although he was drafted over to the right of the back three with Cesar Azpilicueta, Andreas Christensen and Trevoh Chalobah ruled out.

Rudiger wasn't at fault for either of Luton's goals but was slightly more wasteful in possession, though that can be put down to those ahead of him failing to perform.

The academy graduate started in the middle of the back three, a position he has not played at any point in his senior career, and unsurprisingly didn't look comfortable when Chelsea were out of possession, evidenced by his dart forward which vacated space for Cornick.

With the ball, Loftus-Cheek was reliable with his passing and there was one eye-catching drive forward with the ball and he claimed the assist for Timo Werner's goal with a lovely weighted pass forward.

He was moved into midfield for the final 15 minutes and played an incisive pass that enabled Christian Pulisic to cross for Romelu Lukaku's goal.

Back in on the left of the central defensive trio, Sarr was beaten by Burke for the Luton opener and played Cornick onside for the Hatters' second.

The Frenchman, who has impressed at points since the turn of the year, also looked uncomfortable and sluggish in possession