The winners of the Serbia-Germany tie will join Spain, Russia and Italy in the semi-finals.
Djokovic's challenger will be a 22-year-old who is bidding to become the first Greek to win a singles major.
Images from Day 6 of the 2024 Australian Open in Melbourne on Friday.
Roger Federer and Rafael Nadal take to Rod Laver Arena to reprise one of the great sporting rivalries of the modern age on Sunday, a fitting climax to an Australian Open which has sent tennis back to the future.
Serena Williams beat her sister Venus 6-4, 6-4 in the Australian Open final on Saturday to win her 23rd grand slam singles title and become the most successful tennis player in the open era.
Garbine Muguruza stormed back into the Grand Slam big time with a 7-5, 6-3 win over Russian Anastasia Pavlyuchenkova to reach her first Australian Open semi-final. Fourth seed Simona Halep advanced to her second Australian Open semi-final with a 6-1, 6-1 demolition of Estonia's Anett Kontaveit in just 53 minutes on Rod Laver Arena.
Images from Day 4 of the Australian Open in Melbourne on Thursday
Switzerland's Roger Federer claimed a record-equalling sixth Australian Open title with a 6-2, 6-7(5), 6-3, 3-6, 6-1 victory over Croatia's Marin Cilic on Sunday.
A family holiday in the Maldives might seem a good time for Roger Federer to put the racket down, but the Swiss master could not resist the offer of a hit when he found out Marin Cilic was also relaxing in the islands.
India's Rohan Bopanna inched closer towards his second Grand Slam title by reaching the mixed doubles final of the Australian Open along with Hungarian partner Timea Babos, in Melbourne on Friday.
Madison Keys put her hand up for a place on the WTA Players' Council at the Australian Open on Tuesday
For Williams, the catsuit, she said, made her feel like a 'superhero', and the compression stockings she will wear for the duration of the tournament at Melbourne Park, have a more serious purpose.
Images from Sunday's action at the Australian Open, in Melbourne.
Eight-time Grand Slam winner Ivan Lendl said whoever ends up winning the most majors among the 'Big Three' of Roger Federer, Rafa Nadal and Novak Djokovic should be considered the greatest male tennis player of the Open era. Federer, who will be 39 in August, leads the race with 20 Grand Slam singles titles, with Spaniard Nadal close on his heels with 19. Reigning world No. 1 Djokovic is three behind the Swiss with 17 majors under his belt and is the youngest of the trio - at 32 he is a year younger than Nadal.
IMAGES from the Australian Open matches played on Monday
Nadal said he did not expect to go all the way at Melbourne Park
Barty is primed to become the first local since Chris O'Neil in 1978 to win the Australian Open.
Maria Sharapova joined Serena Williams in making an early exit from the Australian Open on Monday but defending champion Victoria Azarenka swept into the quarter-finals with an 18th straight victory at Melbourne Park.
World No 1 Rafael Nadal thinks Melbourne Park's resurfaced hardcourts are playing faster than ever and may not provide a good show for fans when the Australian Open begins on Monday.
So it is over. Two weeks of intriguing tennis where the world's best competed for the year's first Grand Slam. While the match-fixing report cast a shadow over the start of the Australian Open, the tournament gained momentum as it progressed. Rediff.com encapsulates the best moments from the Rod Laver Arena.
A quick look at Rafael Nadal's domination of Roger Federer at Roland Garros.
Six weeks after completing one of the greatest seasons in tennis history, Novak Djokovic begins his 2016 campaign and warm-up for his Australian Open defense in Qatar.
Images from Day 5 of the Australian Open in Melbourne on Friday.
Images from Day 9 of the 2020 Australian Open in Melbourne on Tuesday.
Novak Djokovic's intentions in organising the ill-fated Adria Tour were good but the world number one could have applied a bit more common sense to how the exhibition event was run, former ATP players' council head Vijay Amritraj said. The Serbian has faced fierce criticism after he, Grigor Dimitrov, Borna Coric and Viktor Troicki contracted COVID-19 following the charity event in Serbia and Croatia.
Reigning champion and top seed Angelique Kerber was knocked out of the fourth round of the Australian Open on Sunday, losing 6-2, 6-3 to American Coco Vandeweghe on Rod Laver Arena.
Images from Day 8 of the 2022 Australian Open at Melbourne Park on Monday.
The seventh seeded Indo-Swiss pair turned back the clock to serve past third seeds Daniel Nestor and Kristina Mladenovic 6-4, 6-3 in 62 minutes at the Rod Laver Arena.
Images from matches played on Day 7 at the Australian Open in Melbourne Park on Sunday
Second seed Roger Federer was dumped out of the Australian Open third round by Italy's Andreas Seppi on Friday.
Victoria Azarenka rolled back the years at the Australian Open on Tuesday as the two-times champion crushed third seed Jessica Pegula to reach the semi-finals.
American tennis legend John McEnroe has hailed Novak Djokovic as one of the greats of all time after the Serb again claimed the year-end world number one spot with a victory at the ATP Tour Finals on Friday.
'When we play against Djokovic, many times we didn't know exactly what we had to do. This is more difficult, for me. I prefer to play against Federer'
Frenchman Julien Benneteau caused a stir during an interview on French radio station RMC Sport on Sunday in which he said tournament referees were often kinder to Federer when it came to scheduling his matches.
Novak Djokovic reached the semi-finals of the Australian Open on Wednesday after Kei Nishikori retired hurt when trailing 6-1, 4-1 in their quarter-final.
Andy Murray blamed Novak Djokovic's physical problems in their Australian Open final on Sunday for throwing him off his game but that could hardly explain the meltdown that saw the Scot lose 12 of the last 13 games.
Simona Halep is prepared for her second marathon of the tournament when she faces former champion Angelique Kerber
Roger Federer and Maria Sharapova glittered under the Rod Laver Arena lights on Monday, restoring order at the Australian Open after eight women's seeds crashed out in the afternoon sun on a manic opening day. The evergreen Federer strolled into the second round with a classy 6-4, 6-2, 7-5 win over Taiwan's Lu Yen-Hsun before fellow-second seed Sharapova ruined Croatian qualifier Petra Martic's 24th birthday with a 6-4, 6-1 victory.
Coco Gauff claimed the biggest win of her young career on Friday with a stunning upset of defending champion Naomi Osaka at the Australian Open to reach the fourth round. Caroline Wozniacki and Serena Williams also lost their respective matches earlier in the day. Images from Day 5 of the Australian Open played at Melbourne Park on Friday.
Awesome images from the world of Sport 2018.