No spectators will be allowed in to watch India's tour of South Africa due to a soaring number of coronavirus cases.

Six days before the Test series starts at Supersport Park, Cricket South Africa (CSA) revealed matches will be staged behind closed doors in order to protect the players.

The Proteas and India will play three Tests and as many ODIs without fans in attendance.

A CSA statement said: "Cricket South Africa (CSA) has noted the interests of cricket fans and other stakeholders on the scheduling and the release of the details of ticket sales, in connection with the forthcoming India vs Proteas tour that is scheduled to begin in less than a week.

"Regrettably, CSA wishes to inform the most ardent fans of cricket as well as all sports lovers that owing to the increasing COVID cases around the world, and the fourth wave locally, the two cricketing bodies have taken a joint decision to protect the players and the tour by NOT making tickets available for the India vs Proteas offerings.

"This decision was taken in order to avoid any breaches that could compromise the tour from a COVID-risk perspective and to also maintain a hazard-free bubble environment."

Pholetsi Moseki, the CSA acting chief executive officer, said: "We acknowledge the interest expressed by the fans and other stakeholders on being able to return to stadiums and want to assure all cricket fans that this decision was not taken lightly, but was instead taken in the best interest of the game and in the interest of the health and safety of all patrons.

"Consequently, we urge all sport lovers to exercise absolute care, during these extraordinary times.

"I also wish to take this time to urge all South Africans to continue spreading the positive messages of VACCINATION, VACCINATION AND VACCINATION, because this is the only way that we can truly get our country back into its high economic activity, which will assist government to open up the economy and all its forms of economic activity, including allowing greater numbers of fans back into stadiums."

Rafael Nadal has tested positive for coronavirus on his return to Spain, leaving his participation at the Australian Open in doubt.

The 20-time major champion played at the Mubadala Tennis Championship in Abu Dhabi last weekend and declared his mission a success despite consecutive defeats on his return from a foot injury.

Indeed, Nadal had only competed in two matches since losing to Novak Djokovic in the French Open semi-finals in June before testing his long-term foot problem against Andy Murray and most recently Denis Shapovalov.

However, the 35-year-old's plans to feature in the Melbourne ATP 250 ahead of the Australian Open in early January have suffered a setback after he tested positive for COVID-19 upon landing in his home country on Monday.

Nadal revealed the news on Twitter as he posted: "I wanted to announce that on my return home after playing the Abu Dhabi tournament, I have tested positive for COVID in the PCR test that was performed on me when I arrived in Spain.

"Both in Kuwait and Abu Dhabi we passed controls every two days and all were negative, the last being on Friday and having the results on Saturday.

"I am having some unpleasant moments but I hope that I will improve little by little. I am now homebound and have reported the result to those who have been in contact with me.

"As a consequence of the situation, I have to have total flexibility with my calendar and I will analyse my options. I will keep you informed of any decisions about my future tournaments!"

Nadal was eyeing the Australian Open, which starts on January 17, as his first major comeback, though he earlier admitted his entry was not guaranteed as he evaluated his foot injury and physical fitness.

"I cannot guarantee Australia one hundred per cent, because I need to go home and see how the body responds after these days," Nadal told reporters on Saturday. 

"I have time to make a decision. At this point in my career, I need to go day by day, study each movement well.

"I have been able to show a competitive level against good players even without being in perfect condition. There are things to improve but looking at things with perspective it has been a positive tournament [in Abu Dhabi].

"The main objective is to be healthy enough to do the things that I need to do and aspire to the objectives that I have always had. The illusion and passion continue to exist."

The ATP Tour event in Melbourne, which would be Nadal's first such tournament since August, is due to start on January 3.

The National Hockey League (NHL) has postponed games between American and Canadian sides due to COVID-19 outbreaks, while players' participation at the 2022 Winter Olympics is in doubt.

The league announced on Sunday that 27 games had already been postponed as of the previous day, with the NHL and National Hockey League Players' Association (NHLPA) jointly reporting at least 12 more games would be cancelled through to December 23.

That is due to the fixtures involving travel between the United States and Canada, as the league continues to make a decision on postponements and monitor the "enhanced prevention and detection measures" daily.

"Although there has been a recent increase in positive COVID test results among [layers, coaches and hockey staff, there have been a low number of positive cases that have resulted in concerning symptoms or serious illness," a league statement read. 

"Therefore, the NHLPA's and NHL's medical experts have determined that, with virtually all players and club hockey staff fully vaccinated, the need to temporarily shut down individual teams should continue to be made on a case-by-case basis. 

"With the number one priority of maintaining the health and safety of our NHL community, and amid changing and unpredictable conditions, we are determined to remain flexible and adaptable both in terms of scheduling and in adjusting protocols as necessary."

Six NHL teams have been forced to shut down in the past week as the Detroit Red Wings became the latest, joining the Boston Bruins, Nashville Predators, Calgary Flames, Colorado Avalanche and Florida Panthers.

The NHL and NHLPA are also actively discussing the matter of NHL player participation in the 2022 Winter Olympics in Beijing.

A decision is expected to be announced in the coming days. 

The league has until January 10 to pull out of the Winter Games without being penalised financially, but it retains the right to cancel its plans up until players are scheduled to travel to Beijing in early February.

Chicago Bulls' DeMar DeRozan said he felt "as free as a bird" as he returned from isolation with a star turn against the Los Angeles Lakers.

DeRozan had not played in over two weeks after entering the NBA's health and safety protocols amid a COVID-19 outbreak within the Bulls' camp.

He was one of 10 Chicago players to have to quarantine, though did not suffer any symptoms, and he marked his comeback in emphatic style on Sunday.

DeRozan had 38 points, including decisive free throws inside the last 20 seconds, four rebounds and six assists as Chicago claimed a 115-110 win.

He leads the way for the Bulls on points per game (26.8) this season and despite his stint in quarantine, only Zach LaVine (703) has scored more points for Chicago so far in 2021-22 than DeRozan (671). 

DeRozan is also averaging 8.2 points per game in the fourth quarter this season, the most in the league.

"I felt free as a bird," DeRozan told reporters, as quoted by ESPN.

"Just getting out there, being with those guys, being in front of the fans. Just getting out the basement I was in for 10 days."

Bulls coach Billy Donovan was hugely impressed.

"When the ball is in his hands, there's just a calmness to him," Donovan said.

"He doesn't get rattled. He's been in so many of these moments throughout his life and his career. I think things slowed down for him.

"He knows exactly what he has to get done, what needs to get done and he finds ways to just stay totally locked in. It's really an incredible gift that he has."

Indeed, Carmelo Anthony, who had 21 points for the Lakers, acknowledged DeRozan was at the top of his game.

"The fact that he utilizes the midrange, a lot of people want to kind of discredit that part of the game, but I think that's a lost art," the Lakers forward said.

"DeMar is one of the guys who's mastered that. And at the end of the game, when you gotta down, and you gotta run something, threes are not falling, you gotta get to that. He mastered that.

"He mastered his spots on the court. I think that's why he's very efficient, especially this season, in the fourth quarter, specifically down the stretch."

The victory moved the Bulls to 18-10 for the season, with Chicago well placed in second in the Eastern Conference behind the Brooklyn Nets.

The NBA has postponed a total of five games, including three that were set to be played on Sunday, due to rising COVID-19 cases.

The Brooklyn Nets have lost a significant number of players to positive tests, with 10 players presently in the health and safety protocols – a list that includes stars such as James Harden, Kevin Durant and Kyrie Irving – and their games against the Denver Nuggets on Sunday and the Washington Wizards two days will not go ahead.

The Eastern Conference leaders had just eight fit players for Saturday's 100-93 defeat against the Orlando Magic, who are 6-25 and sit just 14th in the table.

Meanwhile, seven Cleveland Cavaliers players tested positive between Saturday and Sunday, meaning they do not meet the minimum requirement of eight healthy players and are unable to play the Atlanta Hawks, according to NBA rules.

The game between the Philadelphia 76ers and the New Orleans Pelicans will also be postponed, with the former also struggling to come up with eight fit players.

However, it is possible the Sixers will be able to return to action against the Boston Celtics on Monday.

Monday features yet another suspended game, though, as the Magic's clash with the Toronto Raptors is also not going ahead due to a number of cases at Orlando.

The NBA has now had to postpone seven games this season after the Chicago Bulls' fixtures with the Detroit Pistons and the Raptors were called off earlier this month.

Kevin Durant is the latest Brooklyn Nets star to enter the NBA's coronavirus protocols.

Durant was already ruled out of Saturday's game against the Orlando Magic due to an ankle injury.

The Nets revealed the 11-time All-Star would not have been able to play in that match even without that issue, however, after he joined a lengthy list of absentees who have entered the health and safety protocols.

That list is now up to nine, one of which is point guard Kyrie Irving.

Brooklyn earlier stated that Irving will re-join the NBA championship-chasing franchise for road games outside of New York and Toronto.

Irving is yet to play for the Eastern Conference-leading Nets this season due to his refusal to be vaccinated against coronavirus, which has prevented him from practising or playing with the team – New York has a mandate in place that states players must have had a COVID-19 jab.

At the start of the season, the Nets announced they would not accept Irving playing on a part-time basis and thus overlooked him for selection until he is vaccinated.

But due to injuries and a COVID-19 outbreak, which has sidelined superstar and former MVP James Harden, Brooklyn have opted to bring Irving back.

Kyrie Irving will re-join the Brooklyn Nets after the NBA championship-chasing franchise announced the part-time return of the All-Star for road games outside of New York and Toronto.

Irving is yet to play for the Eastern Conference-leading Nets this season due to his refusal to be vaccinated against coronavirus, which has prevented him from practising or playing with the team – New York has a mandate in place that states players must have had a COVID-19 jab.

At the start of the season, the Nets announced they would not accept Irving playing on a part-time basis and thus overlook him for selection until he is vaccinated.

But due to injuries and a COVID-19 outbreak, which has sidelined superstar and former MVP James Harden, Brooklyn have opted to bring back Irving.

"After discussions with our coaches, players and staff, the organisation has decided to have Kyrie Irving re-join the team for games and practices in which he is eligible to participate," Nets general manager Sean Marks said in a statement on Friday, with Brooklyn's next road contest against the Portland Trail Blazers on December 23.

"We arrived at this decision with the full support of our players and after careful consideration of our current circumstances, including players missing games due to injuries and health and safety protocols.

"We believe that the addition of Kyrie will not only make us a better team but allow us to more optimally balance the physical demand on the entire roster.

"We look forward to Kyrie's return to the line-up, as well as getting our entire roster back together on the court."

In 2020-21, Irving averaged 26.9 points, 4.8 rebounds and 6.0 assists per game as the Nets lost in the Eastern Conference semi-finals to eventual champions the Milwaukee Bucks.

Irving enjoyed a career-high 50.6 field-goal percentage and joint-career best 92.2 free-throw percentage last season.

With Harden missing the last three games while in health and safety protocols, Kevin Durant is averaging 39.7 points, 10.3 rebounds and 9.3 assists. The Nets are 3-0 in those games.

Tournament organisers and the Cameroon government on Thursday stated the Africa Cup of Nations "must take place" as they revealed only fans who are fully vaccinated can enter stadiums.

There have been increasing concerns the competition may be called off due to the emergence of the Omicron strain of COVID-19.

The tournament was due to be staged in January and February this year but was postponed due to the pandemic.

Just over three weeks before the opening ceremony at the Complexe Sportif d'Olembe, the government, Confederation of African Football (CAF) and Cameroonian Football Association (FECAFOOT) released a statement vowing that the rearranged AFCON 2021 will go ahead.

The statement said: "In Cameroon, as has been the case elsewhere, effective and reliable measures have been taken as part of a coherent and tried-and-tested approach to counter the pandemic.

"The government has set up a special health protocol to combat COVID-19 that applies to the AFCON.

"In less than 25 days, the best 24 African football teams will participate in the AFCON 2021 and special measures must be taken in connection with this important and prestigious event.

"As is widely known, organised football plays an important role in fostering integration and peace, as well as bringing people together.

"It is also a catalyst of hope, a vehicle for shared values and a conduit for joie de vivre, making it possible to transcend difficulties and see beyond our differences. Therefore, despite the additional challenge posed by the pandemic, the AFCON must take place."

The statement also made clear that supporters will not be allowed into venues unless they are fully vaccinated, while they must also show a negative PCR test result that is no older than 72 hours or a negative antigen test result no older than 24 hours.

CAF will use an independent, internationally recognised laboratory to test players and their delegations.

Charles Leclerc has returned from the season-ending Abu Dhabi Grand Prix with coronavirus, Ferrari have announced.

Leclerc came 10th in the contentious 2021 finale to end a disappointing campaign seventh in the drivers' standings.

Only 19 drivers competed in the race at the Yas Marina Circuit after Nikita Mazepin contracted COVID-19.

And Leclerc has followed in returning a positive test after heading home.

"Scuderia Ferrari Mission Winnow driver @Charles_Leclerc has tested positive for COVID-19," Ferrari said in a short statement on Twitter.

"In accordance with protocols required by FIA and the team, Charles was tested on his return from Abu Dhabi.

"He is currently feeling fine, with mild symptoms and will self-isolate at home."

UEFA president Aleksander Ceferin is urging footballers to get vaccinated against COVID-19 as soon as possible.

In recent months, it has become increasingly clear that vaccine take-up is not as high among elite footballers as within the rest of society.

A story in British tabloid The Sun last week said Premier League clubs feared the government would ban unvaccinated players, suggesting there remains a reasonable proportion holding out.

The Premier League last released vaccination data in mid-October, at which point it was said only 68 per cent of players were fully vaccinated – in terms of wider society, over 80 per cent of adults aged 16 or older in England reported having been double-jabbed as early as July.

Vaccination has become an especially hot topic in the United Kingdom over the past few weeks amid the increase in football match postponements due to COVID-19 outbreaks, and UEFA is beginning a drive to promote the vaccine over the coming months.

"We've just launched a video promoting vaccination, it will go out tomorrow, I think," Ceferin told a news conference on Thursday.

"We should promote the vaccine and we will. We don't have the power to force anyone to be vaccinated, but the promotion starts today and in my humble opinion the video is good because only doctors talk in it.

"They explain why the vaccine is so important. They are experts saying the vaccine is good because of this, this and this, and that side effects are very rare. We will start promoting the vaccine now."

Bayern Munich were reported to have taken a particularly strong stance against unvaccinated players, with claims they would dock wages of anyone forced to into quarantine if they had not been jabbed.

As many as five Bayern players – including Joshua Kimmich – were said to have delayed getting the vaccine, while it emerged in October that several members of the England squad were still unvaccinated.

However, Ceferin remains hopeful that such situations will soon be a rarity.

"For me, I believe in science," he said. "I got vaccinated, and I think [the players] should get vaccinated] as soon as possible, but I still believe for now it's a personal choice.

"People aren't stupid. If you explain in a nice way, not judging them, explain why it's good.

"All figures show vaccinated people are less likely to get infected and all vaccinated people are less likely to have strong effects of COVID if they are infected.

"Sooner or later, if not all, the vast majority will understand it."

Ceferin was also asked to address the challenges of matches not being able to go ahead because of outbreaks, with particular focus on Tottenham.

Their Europa Conference League match with Rennes was unable to go ahead last week and UEFA ruled it could not find a "viable solution in order to reschedule the match".

Spurs are reportedly still attempting to find a workaround, including the possibility of playing the game in France rather than London, but they remain in a tricky situation after their clash with Leicester City was also postponed.

UEFA referred the case to their disciplinary arm and as such Spurs may have to forfeit the game with a 3-0 defeat – Ceferin accepts it may feel unjust but insisted these regulations ensure football's integrity.

"We have our regulations that are clear," he said. "Maybe they're sometimes hard to understand, but without them I don't think we could finish last season without stopping it.

"I know it sometimes looks unfair that a team has to play a certain match in a certain timeframe or the result is 3-0 for the other team, but if we didn't have clear rules then we wouldn't be able to finish the season.

"I sincerely hope we won't need those regulations soon."

Pat Cummins was the victim of "really, really bad luck" as Australia's captain was forced to miss the second Ashes Test and go into isolation.

That was the verdict of Cricket Australia CEO Nick Hockley, who said the team had no option but to go into the Adelaide clash against England without their new skipper.

Cummins was dining at a restaurant on Tuesday and sat nearby to someone who has since been confirmed as a positive coronavirus case.

The star paceman did not breach any biosecurity protocols and isolated as soon as he became aware of the situation. Cummins has since had a PCR test, which produced a negative result, and said he was "gutted" to be ruled out of action. Michael Neser came in for his debut, replacing Cummins.

What it means for Cummins is that he could only watch on television as Australia made a bright start against England, reaching 211-2 in 78 overs as the first day continued to unfold.

Hockley said on BT Sport: "It's certainly been eventful, and it's so disappointing that Pat was ruled out as a close contact last night

"No one's more disappointed than Pat and everyone's been working extremely hard overnight to get the facts, and ultimately it was determined, working with the health authorities, that he had been in close contact with a positive case. It's just really 'wrong time, wrong place', and it's really, really bad luck. We're thrilled that he's going to be fit and raring to go on Boxing Day.

"We worked to establish the facts. We worked closely with SA [South Australia] Health. Ultimately, if you do become a close contact then the rules are to isolate for seven days, so there was really no option in the end.

"We've got protocols in place to make sure that multiple players don't get tied up in that situation, so they have to dine in small groups. If there's one consolation, it's that everyone else is available to play."

Hockley said Cummins should be available for the next match at the Melbourne Cricket Ground, and measures were being taken to ensure he can stay fully fit.

"He's in isolation now. He's watching the cricket," Hockley said.

"We'll be putting plans in place plans to make sure that when people are in isolation they get access to the right fitness equipment, and we all want to make sure he keeps his conditioning up to a level and that he's in optimum condition for the Boxing Day Test."

Steve Smith captained Australia in the absence of Cummins as the day-night Test got under way.

Australian captain Pat Cummins has sensationally been ruled out of the second Ashes Test against England, deemed a close contact of a person who received a positive COVID-19 test.

The news comes on the morning of the first day of the pink-ball Test at Adelaide Oval, with Queensland fast bowler Michael Neser confirmed to replace Cummins in the XI for his debut on Thursday.

Former skipper Steve Smith will captain Australia in the absence of Cummins in the day-night Test in Adelaide.

Cummins was dining at a restaurant on Tuesday and was sat nearby to someone who has since been confirmed as a positive coronavirus case.

The star paceman did not breach any biosecurity protocols and isolated as soon as he became aware of the situation. Cummins has since had a PCR test, which produced a negative result.

However, Cummins has been confirmed as a close contact by South Australia Health and will be required to isolate for seven days, ruling him out of the second showdown with rivals England.

Cricket Australia (CA) said it anticipated Cummins will be available to play in the Boxing Day Test at the MCG in Melbourne.

"Cummins is understandably very disappointed not to be able to captain Australia for the day-night Test in Adelaide," CA said in a statement.

The 28-year-old fast bowler had led Australia to a nine-wicket victory in the Ashes opener as skipper in Brisbane, after taking over from Tim Paine.

Smith's deputising marks the first time he will have captained his country since the controversial 2018 sandpaper-gate Test match in Cape Town, which led to his dismissal as skipper and 12-month suspension.

Australia may have dodged a further bullet, revealing Mitchell Starc and Nathan Lyon were also dining at the same restaurant but at a separate table outdoors.

Both have been deemed casual contacts by SA Health and are free to play.

Real Madrid announced on Wednesday that Luka Modric and Marcelo have tested positive for coronavirus.

The experienced pair returned positive results in the latest round of routine squad tests and will now self-isolate.

Madrid, who beat Atletico Madrid 2-0 in the derby on Sunday, are next in action on Sunday, when they face Cadiz in LaLiga.

While Marcelo, 33, has started just once for Madrid this season, Modric remains a key part of Carlo Ancelotti's side.

The midfielder, who turned 36 in September, excelled against Atleti as Los Blancos moved eight points clear of Sevilla at the top of the table.

In total, he has played 18 times in all competitions this season.

Madrid face Athletic Bilbao on December 22 before resuming their season away to Getafe on January 2.

Organisers of the 2022 Africa Cup of Nations are working "around the clock" to ensure the tournament goes ahead amid suggestions it will be postponed.

There have been reports the finals could be called off due to the emergence of the Omicron strain of COVID-19, first identified in South Africa and now being cited as the reason for a rapid rise in infections in some parts of Europe and Africa.

The tournament was originally set to be played in January and February 2021, but was postponed due to the pandemic.

Veron Mosengo-Omba, the general secretary of the Confederation of African Football (CAF), met with officials from host nation Cameroon on Tuesday to discuss concerns ahead of the tournament's scheduled start on January 9.

CAF said in a statement that "the meeting between CAF and Health Ministry [of Cameroon] ironed out a number of details in relation to the competition" with the continent's footballing governing body and the Cameroon government said to have reached "common ground on the approach to the competition in January".

Mosengo-Omba said: "The meetings were important in getting a level of understanding on the state of readiness in Cameroon. There is a lot of work that is being done.

"We have to continue with the same momentum. We cannot rest. We have to work around the clock. I'm not resting, the LOC [local organising committee] cannot rest. CAF cannot rest. Everyone must join the efforts. We want to see a great Africa Cup of Nations here in Cameroon in January next year.

"Together with the Minister of Sport, we discussed all the pending issues and the way forward.

"There is a lot of progress in most operational matters and there is work that is currently being done day and night by the host nation, Cameroon to ensure that all the facilities for the teams are ready. We know of the massive effort that everyone is putting as part of the final touches on the ground. We see this progress, we acknowledge this progress."

Milwaukee Bucks superstar Giannis Antetokounmpo has been ruled out of Wednesday's game against the Indiana Pacers after entering the NBA's health and safety protocols.

Antetokounmpo is the latest big-name player to be listed in the league's COVID-19 protocols after Brooklyn Nets star James Harden on Tuesday.

Finals MVP Antetokounmpo has been averaging 27.0 points, 11.6 rebounds and 5.8 assists per game for the defending champions this season.

Antetokounmpo is shooting 53.0 per cent from the field – his lowest number since the 2017-18 season, and 28.0 per cent from three-point range.

The Bucks (18-11) are third in the Eastern Conference, behind the Nets (19-8) and Chicago Bulls (17-10).