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.

New Zealand will tour Pakistan twice in 2022-23 after the two boards reached an agreement in Dubai last month.

The Black Caps pulled out of a limited-overs series in Pakistan at the last minute due to a government security alert.

Kane Williamson's side will be back in the country to play two Tests and three ODIs from December next year to January 2023.

They will then return for five ODIs and as many Twenty20 Internationals in April 2023 to make up for not facing Pakistan this year.

New Zealand Cricket chief executive David White said: "Our respective chairmen, Ramiz Raja and Martin Snedden, had very fruitful and constructive discussions while in Dubai, further strengthening the bond between the two organisations It’s good to be going back."

Raja the Pakistan Cricket Board chairman, said: "I am pleased with the outcomes of our discussions and negotiations, and thank Martin Snedden and his board for their understanding and support.

"This reflects the strong, cordial and historic relations the two boards have, and reconfirms Pakistan's status as an important member of the cricket fraternity."

Steve Smith felt Mitchell Starc bowled "as well as he has for a long time" after Australia cruised to a 275-run victory over England in the second Ashes Test to take a 2-0 series lead.

The hosts posted a mammoth first-innings declaration total of 473-9 at the Adelaide Oval after Smith had stepped up as stand-in captain, following new Test skipper Pat Cummins coming into close contact with a positive COVID-19 case last Wednesday.

England could only muster 236 in response, despite 80 and 62 from Dawid Malan and captain Joe Root respectively, with Starc taking 4-37 from his 16 overs – only Nathan Lyon went at a lower economy (2.07).

Australia were again able to declare in the second innings, setting England an improbable 468 to win, before tearing through the tourists to leave six wickets required for victory on the final day.

Jos Buttler battled hard during a 207-ball stint but fell in unusual circumstances as he trod on his stumps going back to Starc, before Jhye Richardson fittingly sealed victory to complete his maiden five-wicket Test haul by removing James Anderson.

While Richardson managed a final-innings 5-42, Smith reserved special praise for Starc – who boasted 7-80 after two wickets in the second innings.

"Mitchell Starc bowled as well as he has for a long time, he led this attack well," Smith told reporters at the post-match presentation.

"He summed it up quickly that there wasn't a great deal of swing so he just wanted to bash a good length and hit some good areas - he did that as well as he has in his career.

"He looked in really good rhythm and I'm incredibly proud of the way he went about his business."

Australia have now won each of their last nine pink-ball Test matches, the only side with a perfect 100 per cent winning record, while England are winless in their last four day-night fixtures since last defeating West Indies in August 2017.

Smith, who fell seven short of a century in the first innings, was captaining for the first time since the 2018 ball-tampering scandal in Newlands and enjoyed his return to the helm, while hailing the performance of some England batters.

He added: "We weren't nervous. They showed some good resistance and fight. Jos played extremely well - it was an innings we haven't seen from him before, he's usually a bit of a dasher. He showed good fight, as well as [Chris] Woakes and [Ollie] Robinson.

"We felt there was time left and all it would take was a couple of good balls.

"I had fun this week as captain and did enjoy it. The guys played really well. We were able to control the game from the first day as Marnus [Labuschagne] and Davey [Warner] set it up with their partnership.

"So we were able to declare when we wanted and bowl where we wanted to bowl."

Joe Root says the England bowlers must be "braver" after Australia won the second Ashes Test at the Adelaide Oval by 275 runs to take a 2-0 series lead.

Jos Buttler made 26 from 207 balls before he stepped back onto his own wickets and Chris Woakes top-scored with 44 as the tourists put up an admirable fight on the final day.

However, it was always likely to prove fruitless and they were eventually bowled out for 192 in the final session.

Jhye Richardson (5-42) claimed a maiden five-wicket Test haul on his Ashes debut, showing Australia's strength in depth in their bowling ranks in the absence of Pat Cummins and Josh Hazlewood.

Cummins is set to return to captain Australia for the Boxing Day Test in Melbourne after missing out in Adelaide due to being a close contact of a positive COVID-19 case.

England's' shortcomings with the bat have been plain to see, but skipper Root wants to see the bowlers change their approach to give them a chance of getting back into the series.

Asked about England's plans, he said: "I think when you look at ball in hand in particular, I don't think we've bowled the right lengths if we're being brutally honest, we needed to bowl fuller.

"As soon as we did in that second innings, we created so many chances and we made it hard work. We need to do that more, we need to get the ball up there, be a bit braver because when we do we make life difficult.

"That's one of the frustrating things, we did that four years ago and we didn't learn from it – we've made mistakes throughout the game that we made last week, whether it be no-balls, missed chances, we just have to be better. We have to learn those lessons quickly ahead of next week."

England will ponder making changes in Melbourne, with fast bowler Mark Wood expected to return.

Root said during the post-match presentation: "Of course someone like Woody, he's always going to offer something, that extra bit of pace he has and hopefully he'll be raring to go for the rest of the series."

Despite England having a mountain to climb, Root believes they can pull off a remarkable fightback and challenged his fellow batters to step up.

Asked if he believes they are capable of winning the series, he said: "Absolutely, you have to be. I think, I'm convinced we have got what we need to win over here, we just need to be better and we can't keep making the same mistakes.

"Guys need to get themselves in, get past that first 20-ball period and then get greedy.

"We need to leave better on occasions as well and manage certain passages of play better, but we're more than capable of doing that and we've shown it in small pockets that we can we've just got to do it for longer, and as I said, do better."

Peng Shuai denied making an accusation of sexual assault against a Chinese government official, amid ongoing concerns for her wellbeing.

Peng has been widely considered as missing since making sexual assault allegations against Zhang Gaoli, the ex-vice premier and member of the Chinese Communist Party's Politburo Standing Committee.

The two-time doubles grand slam winner posted the allegations on social media site Weibo, though her post has since been removed.

But she now claims there had been "a lot of misunderstandings" about the post.

In a video interview posted by Singaporean Chinese-language newspaper Lianhe Zaobao, Peng said: "First, I need to stress one point that is extremely important, I have never said or written that anyone has sexually assaulted me, I have to clearly stress this point."

Peng, who seemed surprised by the interview's questions, also said: "Why would anyone monitor? [I have] always been very free."

Peng was speaking at a sporting event in Shanghai in what was the first time she has addressed the alleged incident publicly on camera.

The International Olympic Committee (IOC) said it had twice spoken to Peng before and the Women's Tennis Association (WTA) welcomed the IOC's pictures, which showed the 35-year-old speaking to IOC president Thomas Back via a video call, but suspended its upcoming tournaments in China owing to its ongoing concerns.

That decision came after WTA chairman Steve Simon said he struggled to believe Peng had sent him an email that claimed the sexual assault allegations were false and that she was safely at home.

Peng, however, said she had written the email in Chinese herself, and that the English translation of the message to Simon published by Chinese state media was accurate.

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.

Kieran Trippier has long been linked with a move back to England.

The 31-year-old full back has plied his trade in Spain for the past two-and-a-half years.

Trippier spent time with Manchester City, Burnley and Tottenham before joining Atletico Madrid, but seems set for a Premier League return next month.

TOP STORY – ATLETICO TO PERMIT TRIPPIER MOVE

Atleti are set to allow England international Trippier to join Newcastle United in January according to the Daily Mail.

The report claims that Atleti are hoping for £15million (€18m) from cashed-up Newcastle, who need reinforcements in their bid to avoid relegation.

Atleti will let the deal progress if they can find a suitable replacement for the defender during January.

ROUND-UP

- Tuttosport claims Juventus will switch their attention to signing an attacking player in January to boost their Champions League qualification hopes, with Manchester United pair Edinson Cavani and Anthony Martial, Paris Saint-Germain's Mauro Icardi and Arsenal's Pierre-Emerick Aubameyang in their sights.

- AS reports that Eden Hazard does not want to leave Real Madrid in the January transfer window, despite struggling for impact with Los Blancos.

- Chelsea are set to make a move for Wolverhampton's Ruben Neves according to TodoFichajes. Thomas Tuchel wants to reinforce the midfield with Saul Niguez having underwhelmed since joining in August.

- Real Madrid are plotting a move to sign Internazionale's Netherlands international Denzel Dumfries reports Defensa Central.

- Veteran Brazilian midfielder Fernandinho is set to extend his stay with Manchester City, scuppering interest from Atletico Mineiro, reports Sport Witness.

Australia have named an unchanged 15-man squad for the remainder of the Ashes ahead of Test matches in Melbourne, Sydney and Hobart.

Pace pair Pat Cummins and Josh Hazlewood will re-join the squad after both missed the second Test in Adelaide.

Cummins was ruled out after being a close contact of a confirmed COVID-19 case, while Hazlewood missed due to a side injury.

The duo will come back into contention to replace Jhye Richardson and Michael Neser who stepped up in their respective absences in Adelaide.

Opening batsman Marcus Harris has been retained in the squad despite managing only 38 runs in four innings during the series. Usman Khawaja remains the back-up batsman in the squad and could still displace Harris.

The Australians will have rest days on Tuesday and Wednesday before assembling in Melbourne on Thursday ahead of the Boxing Day Test from Sunday at the MCG.

Australia leads the series 1-0 and is in a strong position to claim victory on the final day in the second Test in Adelaide on Monday.

Australia Test squad: Pat Cummins (c), Steve Smith (vc), Alex Carey, Cameron Green, Josh Hazlewood, Marcus Harris, Travis Head, Usman Khawaja, Marnus Labuschagne, Nathan Lyon, Michael Neser, Jhye Richardson, Mitchell Starc, Mitchell Swepson, David Warner

Los Angeles Lakers All-Star Anthony Davis revealed he feared the worst when he "heard something pop" as the Minnesota Timberwolves' Jaden McDaniels fell into his left knee on Friday.

Davis limped out of Friday's 110-92 defeat to the Timberwolves after sustaining the knee injury which has since been confirmed as an MCL sprain sidelining him for four weeks.

The Lakers power forward collapsed on his way down the tunnel and said he feared the worst at the time.

"I just reached a point where it was tough to walk," Davis told reporters on Sunday. "I had to take a break.

"I did hear something pop - and the first thing I thought of was [a major injury], which I was emotional, I was just like everywhere. But thank God that it wasn't that."

Davis has played 27 games this season, averaging 23.3 points, 9.9 rebounds, 2.9 assists and 2.0 blocked shots per game.

The eight-time All-Star missed 36 games through injury last season and said he had a positive outlook about his latest setback.

"Mentally I'm fine. I'm in a good space," Davis said. "Last year was a more 'me' thing. This year was like a freakish play. So knowing that nothing I really could have done to avoid it, I guess, keeps me in a good place.

"The locker room keeps me in a good place. People around me outside of basketball keep me in a good place. Great conversation with my wife about it; she's the one who keeps me in a good place, for real."

The Lakers slipped to a 16-15 record with Sunday's 115-110 defeat to the Chicago Bulls without Davis.

"We're still in a good spot, for a team who feel like they can, could have done more, or win more games, games we should have won, and we're still in a good spot," he said.

"So hopefully we can stay afloat with all the stuff going on around the team and being able to still pursue our goal, which is to win a championship."

DeMar DeRozan had 38 points as the Chicago Bulls rallied past LeBron James and the Los Angeles Lakers late in the fourth quarter on the way to a 115-110 victory. 

DeRozan hit a jumper with 52.6 seconds to play to give the Bulls the lead and added a pair of free throws with 15.6 seconds left to extend the margin as Chicago held on late. 

Carmelo Anthony and Wayne Ellington missed game-tying three-point attempts after that before Lonzo Ball iced the win with two more free throws. 

Ball had 19 points and Nikola Vucevic added 19 points and 13 rebounds for the Bulls (18-10), who have the second-best record in the Eastern Conference behind the Brooklyn Nets (21-9). 

James led the Lakers with 31 points and 14 rebounds but made just one of seven shots from three-point range. Anthony had 21 points and Russell Westbrook finished with 20 points, nine rebounds and eight assists for Los Angeles (16-15).

Suns rip Hornets, hold NBA's best record

The Phoenix Suns (24-5) can now claim the best record in the NBA after a 137-106 demolition of the Charlotte Hornets as Devin Booker returned to the lineup after missing seven games with a hamstring injury. Booker had 16 points and was one of nine Suns to reach double figures as Phoenix led 37-15 after the first quarter and did not let up, making 20 of 41 three-point attempts to 10 of 45 from beyond the arc for Charlotte (16-16).

Damian Lillard scored 32 points as the Portland Trail Blazers (13-18) picked up a 105-100 road win against the Memphis Grizzlies (19-12). The Grizzlies had won five in a row and 10 of 11 but shot only 38.5 per cent from the field Sunday as they squandered a career-best 37-point night from Dillon Brooks. 

Lowry, Heat fall to lowly Pistons

The Miami Heat had won four out of five games entering Sunday but everything fell apart in a 100-90 loss to the Detroit Pistons, who had lost a franchise record-tying 14 in a row. Kyle Lowry made just three shots from the field in 42 minutes for the Heat (18-13), though he finished with 19 points as he went 11-of-16 at the free-throw line. Saddiq Bey had 26 point to lead the Pistons (5-24), who recorded their first victory since beating the Indiana Pacers on November 17. 

Carlo Ancelotti insisted nobody should be blamed after Real Madrid's disappointing 0-0 draw at home to struggling Cadiz, applauding the performance even if the outcome was not as expected.

Madrid had been hoping to extend their winning run to eight league matches but failed to convert their superiority into goals at the Santiago Bernabeu on Sunday.

Los Blancos' 36 shots amounted to 10 more than any other team have had in a single LaLiga match this season and the most since Madrid themselves had 37 attempts against Levante in April 2013.

Those shots equated to 2.8 expected goals (xG), meaning it was only the fourth time in the past decade that Madrid have failed to score in a LaLiga game despite registering at least 2.8 xG.

Cadiz defended valiantly, their 14 blocks being the most any team has recorded in a game since Opta began collecting this data (2005-06), somehow managing to leave the Santiago Bernabeu with at least a point for the second season in a row.

Yet, as frustrating as it would have been for his team to fail to beat 19th-placed Cadiz, Ancelotti looked on the bright side.

Speaking to Movistar, Ancelotti said: "I think we've tried in every way, but it has not turned out well.

"It didn't work, but we tried, and therefore I don't have to blame [anyone]. There are many positive things, the only thing that wasn't positive was not having won the three points, but this is football.

"There are times you don't deserve it and you win, and others you deserve it and you don't win. They have played us with a set-up that always challenges us, but that's the way it is.

"In the first half what we didn't do well was breaking their back line, the intensity wasn't very high. The second half was different, we created a lot of opportunities.

"The ball didn't go in, but, personally, I'm happy. We tried, I don't know what more we could do. We could have had more quality in the final metres, but I am not going to ask my team for more."

Numerous Madrid players caught the eye but one of the most notable – even if he was not necessarily the standout star – was Eden Hazard.

The Belgian has been a massive disappointment since joining Madrid from Chelsea, with injuries playing a major role in disrupting him, but he looked bright at times on what was his first LaLiga start since September.

Hazard had three shots, his match-high 0.77 xG showing he was a threat, while he also played five key passes, the second most he has tallied in a league game for Madrid.

Ancelotti added: "It was difficult for him to get into the game, but in the second half he did very well with better combinations with the forwards.

"It is clear that Hazard can be one more weapon for us in the second half of the season."