Fifteen-year-old Cori Gauff clawed her way back from a set and 5-2 down and saved two match points to beat Slovenia's Polona Hercog 3-6, 7-6(7), 7-5 on Friday and reach the Wimbledon fourth round.
Djokovic, the ninth seed, was originally scheduled to play Australian Open semi-finalist Chung Hyeon but the 22-year-old South Korean withdrew with a back injury about an hour before the match was due to start.
Five months before the Olympics opening ceremony in Tokyo, health authorities around the world are scrambling to contain outbreaks of the flu-like virus which has infected about 80,000 and killed more than 2,700 people, the vast majority in China.
Serena Williams returned to Indian Wells on Friday after a 14-year boycott due to racist abuse she suffered in the 2001 final and got her bid for a third BNP Paribas Open title off to a winning, though somewhat error-prone, start.
Plotting a path to the Australian Open has never been trickier or more uncertain. Even the best players are baffled about the best way to prepare for their annual trek Down Under.
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.
Borna Coric ended Roger Federer's 20-match winning streak on grass, beating him 7-6(6), 3-6, 6-2 in the Halle Open final on Sunday while also bringing to a halt the Swiss maestro's reign as World No 1.
Summary of sports events and persons who made news on Tuesday
IMAGES of the all the action from Day 2 of the Australian Open played at Melbourne Park on Tuesday
Williams had little trouble against the 31-year-old German although the gusty breezes at Auckland Tennis Centre played havoc with her ball toss, especially when she was serving for the match at 5-3 in the second set.
Olympic and Wimbledon champion Andy Murray picked up where he left off in Rio by drubbing Argentina's Juan Monaco to take his place in the third round of the Western & Southern Open in Cincinnati on Wednesday.
'This was the first time that I played points and that was too much for me today'
Top seeds Novak Djokovic and Serena Williams face challenging early tests at the US Open following Friday's draws for the year's last Grand Slam starting on Monday.
Images from Day 4 of the French Open, at Roland Garros, in Paris.
Images from Day 2 of the Australian Open in Melbourne on Tuesday
Rafael Nadal extended his astonishing winning run on clay to 42 consecutive sets as he reached the semi-finals of the Barcelona Open with a 6-0, 7-5 victory over Slovakia's Martin Klizan on Friday. The defending champion will face David Goffin on Saturday after the Belgian beat Spaniard Roberto Bautista 6-7(3), 6-2, 6-2.
The professional tennis circuit, which requires players to jet around the world, was forced into shutdown in early March as countries went into lockdown and closed their borders to contain the spread of the novel coronavirus.
Russia, last year's runners-up, were unable to call on world number six Maria Sharapova who was injured
Two-times champion Rafa Nadal crashed out in the second round of Wimbledon on Thursday after being out-muscled and out-thought in four sets by an inspired Dustin Brown of Germany.
With the unique format at the WTA Finals, it is all about how you finish rather than how you start as new champion Agnieszka Radwanska proved perfectly in Singapore this week.
Unseeded Czech Marketa Vondrousova beat Britain's Johanna Konta 7-5, 7-6(2) to reach the French Open final.
Perry said she had been in touch with the local organising team on a daily basis as they prepare to start the tournament on October 19, pending government approval and confirmation that players will be able to travel.
Images from Day 7 of the 2021 US Open in New York on Sunday.
Novak Djokovic had to fight back from a set down to beat Thomaz Bellucci and reach the Italian Open quarter-finals.
The absence of expectant mother Serena Williams and a failure by any of the other top women to produce the kind of dominance the American seven-times champion has consistently delivered makes this year's Wimbledon the most open in years.
Roger Federer celebrated his return to the top of the world rankings with his second title of the season, swatting aside Grigor Dimitrov 6-2, 6-2 in the final of the ABN AMRO World Tournament in Rotterdam on Sunday.
amiliar names, however, are tipped to take off with the winners' trophies. The following is a list of talking points at the Australian Open:
Novak Djokovic and Rogerer Federer loom over Melbourne Park for the year's opening Grand Slam as favourites for the Australian Open as questions remain as to whether one of Generation Next could finally end their stranglehold.
Caroline Wozniacki upset French Open champion Maria Sharapova in a groundstroke marathon to reach the U.S. Open quarter-finals, while Gilles Simon registered the first big surprise in the men's draw.
For the second straight year Serena Williams saw her bid for a seventh U.S. Open title halted in the semi-finals with a 6-2 7-6(5) loss to Karolina Pliskova on Thursday that also ended her long reign as world number one.
Serena Williams rallied to avoid a stunning upset and secure a 1-6, 6-3, 6-3 semi-final win over Czech qualifier Marie Bouzkova at the Rogers Cup on Saturday, setting up a title showdown with local teenager Bianca Andreescu.
Raducanu falls in first match since US Open triumph.
IMAGES from the Australian Open on Tuesday.
Inspired Vinci rallies to beat World No 1 and then tells US crowd: 'But today is my day. Sorry guys'
Kei Nishikori swept aside Rafael Nadal in the quarter-finals of the Rogers Cup.
IMAGES from the matches played at the Miami Masters on Sunday
South Korean Chung Hyeon managed to hang around against Roger Federer a little longer this time around, but only just, as the Swiss maestro advanced to the semi-finals of the BNP Paribas Open 7-5, 6-1 on Thursday.
Images from matches played on Day 4 of the Australian Open at Melbourne Park on Thursday
Roger Federer is keeping a lid on expectations.
On the men's side, the fields have already been divided into two ATP 250 tournaments.