Novak Djokovic won a seventh Wimbledon title and 21st Grand Slam crown on Sunday with a four-set triumph over Nick Kyrgios, whose challenge angrily unravelled after a blistering start.

The pair met each other at practice and had a word before taking the conversation to Instagram for their millions of followers.

Novak Djokovic said he will do everything he can to support his son Stefan if he decides to follow in his footsteps but the Serb wants to make sure the seven-year-old does not feel pressured to pursue a career in tennis.

Defending Wimbledon champion Novak Djokovic became the first player to win 80 matches at all four Grand Slams on Monday while teenage star Carlos Alcaraz battled over five sets to make the second round.

It's been nine years since Sergiy Stakhovksy stunned Roger Federer at Wimbledon in a Centre Court seismic shock.

Rafael Nadal insisted he still has work to do to win a 14th French Open despite knocking out Novak Djokovic and said it was "too late" to be playing after their quarter-final ended in the early hours of Wednesday.

Rafael Nadal edged a late-night classic against old rival Novak Djokovic in the early hours of Wednesday in four sets to reach his 15th French Open semi-final.

Novak Djokovic set up a possible quarterfinal meeting with old rival Rafael Nadal at the French Open with an impressive straight-sets victory over Diego Schwartzman on Sunday.

Spanish teenage sensation Carlos Alcaraz became the youngest man to make the fourth round at the French Open on Friday since Novak Djokovic in 2006.

"I'm always very motivated when I get on the court, with the desire to produce my best level each time. It's not always possible to do it, but today it was very good," said Djokovic.

Reigning champion Novak Djokovic won in straight sets on his return to Grand Slam action at the French Open on Monday and 13-time Roland Garros winner Rafael Nadal eased to victory, but Naomi Osaka crashed out in the first round.

Top seed Novak Djokovic described his straight-sets opening win over Gael Monfils in Madrid on Tuesday as his "best performance of the year" as he set up a showdown with Andy Murray.

Novak Djokovic may not seem like the intimidating tennis virtuoso athlete from the outset; rather, like somebody one might approach in a room full of strangers to ask for the Wi-Fi password, for instance. Fondly referred to as the Djoker, his demeanour in general, feels so vibrant and likeable that one might feel like cracking an informal joke with him; and he seems humble and humane- way more than an average superstar athlete or a comic superhero, yet he has morphed into a champion hero for the ages and for all ages.

No matter the result, tonight's Roland-Garros semi-final promises brilliant tennis.

Novak Djokovic ends his final drought as the former world number one reaches his first title match for a year with a 7-6 (7/5), 6-4 win against Jeremy Chardy at Queen's Club.

Novak Djokovic hopes to emulate Roger Federer and get back to his best after he announced that he is shutting down his season to rest an elow injury.

Novak Djokovic admits a long break is on the cards after an elbow injury forced him to retire from his Wimbledon quarter-final against Tomas Berdych.

Andy Murray will retain his world number one ranking if he makes the Wimbledon semi-finals Wednesday, while Roger Federer defies age and Novak Djokovic fights a shoulder injury.

Seven-times champion Federer takes on Dusan Lajovic and Djokovic faces Adam Pavlasek in round two, they will be hoping to put on an entertaining show from start to finish after Tuesday's fans were left feeling rather short-changed.

Dominic Thiem demolish defending champion Novak Djokovic in a stunning French Open upset, setting up a semi-final duel against nine-time champion Rafael Nadal.