Tennis: Djokovic, Federer Headline Manic Monday At Wimbledon Open

Novak Djokovic and Roger Federer headline the final 'Manic Monday' at Wimbledon with the two Grand Slam heavyweights looking to edge closer to a dream title showdown.

World No 1 Djokovic, chasing a sixth Wimbledon and record-equalling 20th major, is already halfway to becoming just the third man to complete a calendar Grand Slam.

"I look to peak at the biggest tournaments in our sport. At this stage of my career, Grand Slams are the ones that matter the most," said Djokovic who can reach the quarterfinals of a Slam for the 50th time.

The Serb faces Chilean 17th seed Cristian Garin who had never previously won a main draw match at the tournament before this year.

Eight-time champion Federer, who takes on Italy's Lorenzo Sonego, can become the oldest quarterfinalist at Wimbledon in the Open era.

Federer, just five weeks shy of his 40th birthday, is in the Wimbledon last 16 for the 18th time.

In all, it will be his 69th appearance in the fourth round of a Slam but he was quick to salute Djokovic's achievements.

"It's just very, very impressive to see what he's doing this year," said Federer whose third round win over Cameron Norrie gave him the 1 250th victory of his career.

'Manic Monday', when the entire men's and women's fourth round is played out, will not exist from next year as Wimbledon will stage matches on the middle Sunday.

There will be a further tweak in the schedule this week with the All England Club announcing that they will move to full capacity crowds from Tuesday's quarterfinals onwards.

Meanwhile, second seed Daniil Medvedev, who staged a comeback from two sets down for the first time in his career to beat 2017 runner-up Marin Cilic, faces Hubert Hurkacz.

Polish 14th seed Hurkacz is the only player in the fourth round not to have dropped serve.

Sebastian Korda, whose father Petr made the quarterfinals in 1998, celebrates his 21st birthday on Monday.

He can reach the quarterfinals of a Slam for the first time by beating Russian 25th seed Karen Khachanov. (AFP)