The Blues have been in top form in recent weeks and they won their fifth Premier League game in a row on Saturday when they claimed a 2-1 win at Watford.
That result lifted the Blues six points clear of fifth placed Arsenal and left them in the driving seat for a top-four finish in the Premier League.
Chelsea FC have been earning lots of praise for their performances this season, especially with Lampard having placed his faith in young players such as Tammy Abraham and Mason Mount this term.
Lampard has been delighted by their performances in recent weeks, but he admits that there is still room for improvement from the Blues.
Speaking in an interview quoted by Metro, Lampard said: “At times we are certainly producing some of the form I want from us.
“I will say our work-rate off the ball, although this was a different type of game, in some games we’ve been pushed hard – Ajax away, Liverpool and games like that.
“That’s been something that’s really pleased me. They’ve worked and they’ve done that through training at a level that’s got them fit enough.
“We work a lot on that. In periods of games I’m really pleased with how we’re combining and switching the ball, the wingers are getting involved in the game.
“If I’ve got a gripe it’s that we’re not sustaining that for long enough periods at times. I know it’s not easy, but we always strive for more.
“I’m pleased with big parts of it, but we can get better.”
Chelsea FC will return to Premier League action on Saturday lunchtime when they take on Crystal Palace at Stamford Bridge before the final international break of the year.
The Blues are aiming to maintain their place in the top four this season after they finished third in the table under Maurizio Sarri last term.
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