A youthful Chelsea team produced a composed performance in sweltering conditions in Chapel Hill, North Carolina. Ian Maatsen opened the scoring early on after good work from Nicolas Jackson and the Dutchman added a second before the interval.

The final three goals arrived in the final ten minutes of the contest. Conor Gallagher found the net with a guided shot from distance before summer signing Christopher Nkunku struck after rounding goalkeeper Rob Lainton.

Ben Chilwell got in on the act in stoppage time as he deftly finished from close range after an excellently threaded pass by Brazilian Angelo Gabriel.

It was a job well done in the mind of Pochettino. Yet the Chelsea head coach wants to see more from his players in the matches ahead.

'Like always after a pre-season game, I'm happy because of the attitude,' the Argentine coach explained after the win. 'But, of course, it is time to improve.

'I think it is part of the process in this period to learn in the way we want to play and, of course, build the physical condition also. I am happy with the performance.

'I think the most important thing now is to get positive feelings and to start to play again after the holidays. All the players came in at different levels and now it is about putting them all at similar levels to try to compete for the season.'

The average age of the starting XI selected by Pochettino was just above 19 years old. However, there was no sign of inexperience as Wrexham, who last season won the National League, were restricted to half chances in the opening period.

'It is good to have the opportunity to see all these young guys who can show their quality,' said Pochettino. 'It is important for them and for us to have a real assessment. For sure all have quality, they need time and space to show they can compete for a place in the squad.'

Two of the young starters were midfielders Cesare Casadei and Andrey Santos, both of whom have impressed on the international stage in recent months.

The clash against Wrexham provided both with a first opportunity to show what they could do in the Chelsea first team, and Pochettino was pleased with what he saw.

'The profile is very good, the two names and Carney (Chukwuemeka). They have the profile, only they need time.

'They are young and we cannot forget we are in Chelsea, the pressure is always to win. They need to have the place, to have time to evolve. But yes, the profile is good.'