Roger Federer reached a record-extending 17th Wimbledon quarter-final as young Italian Matteo Berrettini was overwhelmed on Centre Court.

The Swiss great, bidding for a ninth title, needed just an hour and 14 minutes to seal a 6-1 6-2 6-2 win.

Novak Djokovic and Rafael Nadal also continued to breeze through the draw with equally-comfortable last-16 wins.

Defending champion Djokovic knocked out inexperienced Frenchman Ugo Humbert, while Nadal beat Portugal's Joao Sousa.

Serbian top seed Djokovic showed the gulf in class as he won 6-3 6-2 6-3 against world number 66 Humbert, while Nadal - only tested so far by second-round opponent Nick Kyrgios - eased to a 6-2 6-2 6-2 win over Sousa.

Experience shows as Federer and Djokovic glide through

Djokovic's greater pedigree shone through as he outclassed Humbert on the 21-year-old's maiden appearance in the second week of a Grand Slam.

The 15-time Grand Slam champion broke early in the opening two sets to take control, needing a touch longer to earn the break in the third, before swatting away his young opponent in one hour and 42 minutes.

Djokovic, the top seed, only dropped 14 points on serve and took five of nine break points to set up a meeting with Belgium's 21st seed David Goffin in the last eight.

Only Poland's Hubert Hurkacz has managed to take a set off the Serb, who has wrapped up three of his opening four matches in around two hours or less.

"I don't think about trying to conserve energy to be honest, I try to focus on what needs to be done to win the match," said Djokovic, who reached his 11th quarter-final at Wimbledon.

"I was very pleased to execute the job in three sets."

With 32-year-old Djokovic and 33-year-old Nadal safely through, Federer matched them to become the fifth man aged in his thirties to reach the quarter-finals at the All England Club.

Nine over-30s reached the last 16 - the highest tally at a Grand Slam in the Open era - with unseeded American Sam Querrey, 31, and Spain's 23rd seed Roberto Bautista Agut, 31, also advancing to the last eight on Monday.

Querrey, a semi-finalist in 2017, edged out another unseeded American, Tennys Sandgren, in a 6-4 6-7 7-6 7-6 win to set up a meeting against Nadal.

Bautista Agut reached the SW19 quarter-finals for the first time with a 6-3 7-5 6-2 win over France's 28th seed Benoit Paire, while Goffin, 29, beat unseeded Spaniard Fernando Verdasco in a 7-6 (11-9) 2-6 6-3 6-4 win.

Impressive Nadal sends 'loud and clear message'

Nadal has struggled to go far at Wimbledon in recent years, with fitness issues and the demands of his favoured clay-court season taking their toll on the two-time champion.

A run to the semi-finals last year, where he lost to Djokovic, was the first time he had progressed past the last 16 since reaching the 2011 final.

The Majorcan, whose movement was sharp against Sousa, underlined his credentials as one of the favourites with a clinical victory wrapped up in one hour and 45 minutes.

The quality of Nadal's performance sent a "loud and clear message to the locker room", according to three-time Wimbledon champion Boris Becker.

No outcome other than a comfortable Nadal win looked likely after he showed his intent by making a lightning start.

He broke twice to race into a 3-0 lead with only 10 minutes on the clock and little over a quarter of an hour later he was serving for the set.

Sousa, who had impressively beaten Croatia's 2017 finalist Marin Cilic and Britain's Dan Evans on his way to reaching the second week, lost half an opportunity when he pushed a forehand wide at 30-30 and was punished by a whipping backhand winner on set point.

More punishment came his way in the second set, Nadal breaking at the first attempt and again for a 5-2 lead, leaving even Sousa applauding.

Nadal broke twice more in the third set, first for a 2-1 lead after scrambling to hit a wonderful cross-court winner which left the Spaniard jumping in delight - and brought many on Centre Court to their feet - then again to leave him serving for the match.

By that point Sousa had little left to offer, Nadal holding to love and clinching victory with an ace out wide.

"It was a good solid match, the second serve didn't work as well as two days ago, but the rest was very positive," Nadal told BBC Sport.

"I am happy to be where I am, the body is holding well and I'm playing some good tennis."