Chelsea manager Frank Lampard has credited Mason Mount and Kai Havertz for the smooth switch and execution of 4-3-3 formation against Burnley at the weekend.

Chelsea have struggled with 4-2-3-1 formation before Lampard decided to change to 4-3-3 midway through the second half against Krasnodar in the Champions League.

The positive reaction to that meant the Chelsea legend kept faith with the formation against Burnley and the Blues produced an impressive 3-0 victory at Turf Moor.

Lampard credits Mason and Havertz’s performance for the success.

“I never doubt Mason’s response professionally,” Lampard said, as quoted by Chelsea FC website.

“There are things I get to see behind the scenes people on the outside don’t. His attitude is first class every minute of every day in a work sense.

“Kai Havertz playing in that eight position in the last couple of games has shown a lot to his game, picking up the ball in deeper areas as well as arriving in the box. It’s certainly given me nice feelings and ideas.

“We haven’t trained a lot, we are playing games to improve, and sometimes it takes a little process of tweaks of formation to see the best way forward. That will keep tweaking, but when you see performances like that, it gives you a nice feeling.”

Lampard is likely to continue with 4-3-3 when Chelsea face Édouard Mendy’s former club, Rennes in the Champions League on Wednesday.