Serbian Djokovic, 31, needed elbow surgery in February to cure a problem that surfaced in 2017, but after some jarring defeats he returned to the kind of domination he achieved in 2015, winning Wimbledon and the US Open.
Bernard Tomic is set to sit out the Australian Open after Tennis Australia (TA) decided not to award him a wildcard to the main draw, the organisers said on Thursday.
The Danish World No 3 ended 2017 with the biggest title of her career in Singapore and returned a day after thrashing Madison Brengle in her season opener to hit 21 winners against eight unforced errors in the 53-minute win over Martic.
Summary of sports events and persons who made news on Friday
Konta first British woman in US Open last 16 since 1991
Photos from French Open matches played at the Roland Garros on Friday
As the players warm up before the tournament, meet the players who could well be contenders for the 2017 Australian Open titles.
A summary of sports events and sports persons, who made news on Saturday
The returning Scot also announced his withdrawal from next week's Rogers Cup in Toronto.
Images from Day 6 of the Australian Open in Melbourne, on Saturday.
PHOTOS from day seven of the Wimbledon championships at the All England Lawn Tennis and Croquet Club in London on Monday
IMAGES from the Australian Open on Tuesday.
World number one Simona Halep saved three match-points before edging past an inspired Lauren Davis 4-6, 6-4, 15-13 in a thrilling marathon to reach the fourth round of the Australian Open on Saturday.
IMAGES from Day 3 of the US Open in New York on Wednesday.
IMAGES from matches played on Day 7 of the French Open at the Roland Garros in Paris on Saturday
2016 is at the halfway stage and the year has already seen some stunning sporting wins, underdogs emerging triumphant on the biggest stages of them all.
Swiss qualifier Timea Bacsinszky continued to swipe past the seeds at the Wuhan Open on Wednesday by dumping World No 4 Maria Sharapova from the hard court tournament with a 7-6(3), 7-5 victory.
US Open champions Marin Cilic and Serena Williams kicked off their China Open campaigns with straight sets victories against battling underdogs on Monday, but Rafael Nadal suffered defeat in a rare doubles outing on his return from injury.
Drysdale wins close single sculls gold Also, check out late gold medal winners from Day 7...
Dani Alves has blamed the media for Brazil's unsuccessful World Cup campaign but conceded that the team did not prepare properly ahead of the humiliating 7-1 defeat by Germany in the semi-final.