Novak Djokovic kicked off his season in style with a 7-5, 7-5 win over Canadian talent Denis Shapovalov on his favourite Rod Laver Arena court on Tuesday before returning to lead Serbia to a doubles victory that sealed their ATP Cup opener 2-1.
Following is a list of quotes from the 17-times Grand Slam champion on tennis, the pandemic, vaccines and more:
Novak Djokovic announced his resignation as head of the ATP's Player Council and intends to form a new breakaway body to represent athletes -- but his plans have immediately met with stiff resistance from within tennis.
Images from Day 4 of the 2021 US Open in New York on Thursday.
was on a 21-match unbeaten run before the season came to a halt in early March, winning the ATP Cup with Serbia, an eighth Australian Open title and a fifth Dubai Tennis Championships crown.
Live tennis action is a fading memory during the coronavirus shutdown but 20,000 fans tuned in to watch old rivals Novak Djokovic and Andy Murray chew the fat on Instagram on Friday. Sitting on their sofas at home, the duo spent an entertaining hour reminiscing about some of the classics in their 36-match series, painful losses and even came up with the perfect tennis player.
Mixed reactions pour in as Osaka debate rages on.
World number one Novak Djokovic was disqualified from his US Open fourth round match against Pablo Carreno Busta on Sunday after the Serbian struck a line judge with a ball following a point.
Alexander Zverev into ATP Finals semis after straight sets win over Carlos Alcaraz
His Queen's run, plus a quarter-final at the French Open suggest Novaj Djokovic, who will climb back into the world's top 20 on Monday, is ready for a lengthy run at Wimbledon.
Djokovic dismissed suggestions he was under intense pressure to overhaul Nadal and Federer in their three-way race to become the greatest male player of all time.
The five-day lockdown, ordered after a new COVID-19 outbreak at a hotel, was due to start at midnight.
US Open Tournament Referee Soeren Friemel said there was "no other option" but to disqualify world number one Novak Djokovic on Sunday after he struck a line judge with a ball.
Djokovic's challenger will be a 22-year-old who is bidding to become the first Greek to win a singles major.
Given that Twelve Final Days doesn't really delve into the genesis of Roger Federer, the ups and downs of his career, the assumption is that it is meant for people who are already familiar with his work, observes Deepti Patwardhan.
"Personally I am opposed to vaccination and I wouldn't want to be forced by someone to take a vaccine in order to be able to travel," Djokovic said in a live Facebook chat with several fellow Serbian athletes.
Grigor Dimitrov and Borna Coric tested positive for COVID-19 while participating in Novak Djokovic's Adria Tour exhibition tournament
Zheng Qinwen became the first Chinese player to win an Olympic tennis singles gold medal when she held off Croatia's Donna Vekic for a 6-2, 6-3 win in a tense final on Saturday.
Second seed Novak Djokovic outclassed Roger Federer in straight sets to enter the final of Australian Open in Melbourne on Thursday. Seven-time champion Djokovic started off slowly before he took complete control to register an emphatic 7-6, 6-4, 6-3 victory in the first semi-final.
Carlos Alcaraz suffered a shock 6-1, 7-5 defeat against Norway's Casper Ruud in his opening match at the ATP Finals
"(Novak) has said that he views this as a private matter for him. We would love to see Novak here, he knows that he'll have to be vaccinated to play here."
There is no one more unbeatable in men's tennis than Novak Djokovic when the Serb is at his best, former world number four American Todd Martin said. Reigning world number one Djokovic has already established himself as one of the best ever to play the game and the Serb's Grand Slam haul of 17 is just three behind the 20 that Roger Federer has amassed. The Swiss player will be 39 in August.
Djokovic urges angry fanbase not to turn on US Open line judge
Not since Stan Wawrinka's 2016 US Open triumph has a Grand Slam been won by someone other than the 'Big Three', winners of the last 13 major titles.
Alexander Zverev booked his place in the last four of the ATP Finals where he will face world number one Novak Djokovic after a 6-2, 6-4 win over Hubert Hurkacz in Turin on Thursday.
Germany's Zverev has described the allegations as "unfounded and untrue" and without any legal investigation the men's ATP Tour would be unlikely to intervene.
World number one Novak Djokovic had to work hard for a three-set victory over Hungarian Marton Fucsovics at the Paris Masters on Tuesday in his first match since losing the U.S. Open final in September.
Novak Djokovic took a first unsteady step toward completing the calendar-year Grand Slam on Tuesday as the Serb laboured into the second round of the US Open with a 6-1, 6-7(5), 6-2, 6-1 win over dashing Danish teenager Holger Rune.
Novak Djokovic marked his return to Serbia, after being stranded in the Spanish resort of Marbella for two months due to the coronavirus lockdown, by announcing that he has organised an event which will be contested across the Balkans. When the world number one had travelled to Marbella with his family in mid-March to visit his younger brother Marko, he had no idea it would be another two months before he could return to his homeland on Sunday.
Portuguese and Juventus striker Cristiano Ronaldo taught his friend and tennis great Novak Djokovic 'how to jump'.
'I can only see criticism lately and much of it is malicious'
Factbox on Novak Djokovic's five Wimbledon titles
Thirteen-time champion Rafael Nadal, 20-time Grand Slam winner Roger Federer and world number one Novak Djokovic were placed in the same half of the French Open draw on Thursday.
Here is a timeline of Djokovic's decline since the last of his 12 Grand Slam titles.
A furious Djokovic went on to smash his racket three times on the court and was met with a chorus of boos from the spectators.
World number one Novak Djokovic produced a majestic display in a 7-5, 6-3 victory over American John Isner on Thursday to extend his winning streak in Asia.
Stefanos Tsitsipas said he would not be surprised if Daniil Medvedev beat Novak Djokovic
Novak Djokovic threw his racket on the ground, drawing a warning from the chair umpire.
Simona Halep questioned the "big difference" in how doping cases are treated after world number two Iga Swiatek was handed a one-month drugs ban
Favourites Russia Tennis Federation opened their Davis Cup Finals campaign with a resounding victory over Ecuador, Britain began with a win against France and Italy eased into the quarter-finals with a win over Colombia on Saturday.
