Riyad Mahrez and co. failed to spark as reigning Africa Cup of Nations champions Algeria were held to a 0-0 draw by Sierra Leone in their opening Group E fixture.

Heading into the delayed 2021 edition of the tournament aiming to become the first team to win consecutive AFCON titles since Egypt won three in a row between 2006 and 2010, Algeria dominated on Tuesday but could not find a way through Sierra Leone's stubborn rearguard.

Appearing at only their third AFCON finals and their first since 1996, Sierra Leone went close themselves midway through the first half through Alhaji Kamara and Umaru Bangura, though they only managed one attempt on target throughout.

The second half was all Algeria, yet Mohamed Kamara pulled off some excellent saves to deny Yacine Brahimi and Mahrez, while one-time England international Steven Caulker made a superb block from Sofiane Bendebka.

Algeria were able to call on the likes of Baghdad Bounedjah – who netted the winner against Senegal in the 2019 final – and Said Benrahma from the bench, but the West Ham attacker spurned a glorious opportunity late on as the holders' profligacy proved costly in an underwhelming start to their title defence in a group that also includes the Ivory Coast and Equatorial Guinea.

US Open champion Emma Raducanu suffered the heaviest defeat of her professional career at the hands of Elena Rybakina at the Sydney Tennis Classic.

The ninth seed needed just 55 minutes to storm to a 6-0 6-1 victory to set up a meeting with Caroline Garcia in round two.

This was only Raducanu's eighth appearance in a WTA main draw and the 19-year old had not played since November having contracted COVID-19 and then withdrawn from the Melbourne Summer Set last week.

Rybakina lost only 11 points on serve in the match, sending down four aces. Raducanu, by contrast, struggled badly: the Briton gave up six double faults and won just two points behind her second serve.

"My serve is a weapon, so I'm always working on it and trying to find some variety," said Rybakina. "For sure, it's my game to play aggressive and my serve is helping a lot."

Elsewhere in Sydney, Olympic gold medallist Belinda Bencic beat Beatriz Haddad Maia 6-3 6-2 in her first match of the year and will now face France's Oceane Dodin.

Home favourite Ajla Tomljanovic defeated Anna Karolina Schmiedlova in straight sets, while world number 20 Elise Mertens also progressed.

At the Adelaide International 2, Coco Gauff looked in strong form as she dispatched Katerina Siniakova 6-1 6-2, while fellow seed Tamara Zidansek beat Heather Watson in a three-set battle.

There was a shock for top seed Aryna Sabalenka, though, as she fell 5-7 6-1 7-5 to Sweden's Rebecca Peterson, who celebrated her first win over a top-five player, while American Lauren Davis beat seventh seed Jil Teichmann in three sets.

Ninth seed Sorana Cirstea lost in straight sets to Anhelina Kalinina, but eighth seed Liudmila Samsonova beat Mayar Sherif.

Andy Murray swept through his opening test at the Sydney Classic as the wildcard grabbed his first win of the year.

Murray sped to a 6-3 6-1 victory over Norwegian Viktor Durasovic, a player ranked a lowly 345th by the ATP who won through two qualifying rounds to reach the main draw.

The Scot broke four times across the contest and won 25 of 26 points when landing a first serve, an encouraging rate. Realistically, anything other than a comfortable win for the former world number one would have been concerning ahead of the Australian Open.

Murray at least put last week's disappointing first-round loss to Facundo Bagnis at the Melbourne Summer Set tournament behind him, and now a stiff tests await him in the last-16 stage.

Georgian second seed Nikoloz Basilashvili is next for Murray on Wednesday, with the world number 23 a familiar foe after these two met in the first round at Wimbledon last July.

On that occasion, Murray won in four sets following a desperate wobble in the third, which he lost from 5-0 ahead.

Five times an Australian Open finalist, Murray believes limbering up this week in Sydney can set him up well for the season's first grand slam.

"It is perfect conditions here," Murray said. "It feels like you are playing indoors. It is really nice to get your range here, and hopefully I can carry that through to Melbourne.

"I was hoping to get matches in Melbourne last week, but that didn't happen. Thankfully the tournament organisers and Tennis Australia agreed to give me the wildcard and the opportunity to play here, and I am very grateful for that."

Tuesday also saw a win for Maxime Cressy, the American serve-volleyer who caused a stir with his run to last week's final in Melbourne before pushing eventual champion Rafael Nadal in the title match.

Cressy, who was born in Paris, is a throwback in an era dominated by baseliners, and his game again came good as he saw off Adrian Mannarino 6-3 7-5. Dusan Lajovic awaits him in round two after the Serbian beat Spain's Alejandro Davidovich Fokina 7-6 (7-5) 6-4.

At the Adelaide International 2 tournament, South African fifth seed Lloyd Harris made a first-round exit, losing 5-7 7-5 6-4 to Soonwoo Kwon.

There was another positive performance from Adelaide's own Thanasi Kokkinakis, who swatted away Frenchman Benoit Paire 6-4 6-0 to tee up a second-round shot at American second seed John Isner.

Kokkinakis, a once-bright young prospect who is finding his way again on tour after injury trouble, reached the semi-finals of last week's Adelaide tournament and is eyeing another run in South Australia before heading to Melbourne.

"After a good run last week, I was pretty knackered – I'm not going to lie," Kokkinakis said, quoted in The Australian. "But I thought another one in my hometown was a perfect situation.

"It was kind of a win-win for me almost. If I won, perfect, I get more matches. If not, I get to Melbourne and get to prepare for Aussie Open, but I'm stoked with the win."

Mohamed Salah insists he is not demanding a "crazy" contract as he again stressed his Liverpool future is in the hands of the club.

The Egypt star's deal expires at the end of the 2022-23 season and there has not yet been a breakthrough in negotiations over an extension.

The 29-year-old has previously made it clear he wants to stay at Anfield but that it is up to Reds owners Fenway Sports Group to come to an acceptable agreement.

Speaking to GQ, Salah called on the club to show their appreciation for what he has achieved since signing from Roma in 2017.

"I want to stay, but it's not in my hands. It's in their hands," he said. "They know what I want. I'm not asking for crazy stuff.

"The thing is when you ask for something and they show you they can give you something, [they should] because they appreciate what you did for the club.

"I've been here for my fifth year now. I know the club very well. I love the fans. The fans love me. But with the administration, they have [been] told the situation. It's in their hands."

Salah has been in spectacular form this season, scoring 23 goals and providing nine assists in 26 Liverpool appearances.

In Europe's top five leagues, only Bayern Munich striker Robert Lewandowski (34) has been directly involved in more goals than Salah.

Those two, along with Lionel Messi, are the finalists for The Best FIFA Men's Player Award for 2021, with the winner to be announced on January 17, but Salah was surprisingly only seventh in the final standings for last year's Ballon d'Or as Messi claimed the prize for a record-extending seventh time.

France Football's award is still something Salah hopes to win, although he suggested "politics" could get in the way.

"If you asked me if this was a drive for me to be here? Yeah, of course. I can't really lie and say honestly I didn't think about it," he said.

"No, I think about it. I want to be the best player in the world. But I will have a good life even if I don't win [the Ballon d'Or]. My life is okay, everything is fine.

"Sometimes I feel it's just politics."

Khris Middleton said he was "definitely concerned" and stand-in head coach Darvin Ham bemoaned another defeat as the Milwaukee Bucks tripped up once more against the Charlotte Hornets.

The Bucks have followed a run of six consecutive wins with four defeats in five games, the latest being a 103-99 setback to the Hornets at Spectrum Center.

Giannis Antetokounmpo scored 26 points with 13 rebounds and eight assists, while Middleton had 27 points, seven rebounds and 11 assists, yet the Bucks delivered an incomplete performance.

The Hornets improved to 22-19, while the sliding Bucks are now 26-17 for the season, following up their championship campaign in 2021 with something not quite so persuasive.

It was a second loss to the Hornets in three days for the Bucks, who, like so many other teams, are feeling the impact of the COVID-19 crisis.

Jrue Holiday has joined the ranks of Bucks stars sidelined and isolating due to the NBA's health and safety protocols, and inevitably his absence was felt. Holiday averages 18.4 per game this season and leads the team for assists (6.7)

Acting head coach Darvin Ham, leading the Bucks with Mike Budenholzer in health and safety protocols, could not coax out of the team a match-winning display, as James Borrego's Hornets extending their winning streak to three.

"My hat's off to Charlotte," Ham said. "JB has a great young group, it's a hell of an offensive team. And we just didn't make enough plays tonight.

"We just try to get to the game and as a staff, put our brains together and put together the best package possible. It's not going to be perfect, circumstances are what they are.

"I feel we're still in a position to win a game and we came up short."

From 99-99 with under half a minute remaining, LaMelo Ball sank the decisive shot and Miles Bridges made sure with two late free throws.

The Bucks looked to Middleton and Antetokounmpo in those late stages, which Ham said was the sensible play.

"Down the stretch you want the ball in the hands of your two best players and that was definitely deliberate," Ham said.

"Time and time again ... they've won a championship playing that way. There's not a better option in my opinion."

It gets no easier for the Bucks, who must tackle the Western Conference-leading Golden State Warriors on Thursday, albeit this time with home advantage.

Middleton, who had a fourth consecutive 20-plus point game, wants to see this slide halted as soon as possible.

He said: "I think you're definitely concerned – you never want to lose four out of five, you never want to lose two in a row."

Quoted in the Milwaukee Journal Sentinel, Middleton said: "We understand the circumstances. We're not using that as an excuse. Everybody's going through it.

"So we still have to find a way to… compete and give ourselves a chance to win, which we have these last two nights, we just couldn't pull it out."

Kyrie Irving impressed in only his second game of the season but insisted he still has to get up to speed after the Brooklyn Nets were surprisingly beaten at the Portland Trail Blazers on Monday.

A dominant third quarter from Portland, in which they bettered the visitors by 13 points, ended up being crucial as they ran out 114-108 winners, despite being short-handed going into the game.

Anfernee Simons starred with 23 points, six rebounds and 11 assists for the Blazers, who were missing Damian Lillard (abdomen) as well as Norman Powell (COVID-19 protocol), Larry Nance Jr (knee) and CJ McCollum, who is expected to return soon after recovering from a collapsed lung.

The Nets were themselves without James Harden (knee) but did have Kevin Durant (28 points, 10 rebounds, five assists) on court. The 33-year-old's points return marked 19 straight games with 20 or more points, the second-longest streak of 20-point games in Nets history.

Irving has refused to receive the COVID-19 vaccine and is therefore barred from playing in New York due to the city's vaccine mandate, but was playing just his second game on the road for the Nets this season and managed 22 points, eight rebounds and four assists.

"It felt like I made a few good moves, but now it's just getting back in that NBA action of that athleticism and catching up to that speed. That's really what it is at this point, I feel," Irving said after the loss.

Portland first-year coach Chauncey Billups had been effusive in his praise of Irving before the game, stating his belief that 29-year-old was the "most skilled point guard in history".

After the victory for his team, Billups praised his own players, saying that nobody thought this result was possible.

"Certainly nobody in the world thought that we would win this game with the guys that we have missing, even though they're missing some important players too," Billups said. "I'm more happy than anything for our team, to be honest. We've suffered a lot of losses in this building, a lot of bad losses."

The result means the Nets are 25-14 and second in the east while the Blazers improve to 16-24.

Australia's Immigration Minister will "thoroughly consider" Novak Djokovic's visa status after fresh concerns were raised over his whereabouts in the two weeks prior to arriving in the country.

Djokovic is alleged to have falsely declared he had not travelled in the 14 days prior to his flight to Melbourne in the Australian Travel Declaration form which is a "serious offence".

The world number one flew from Spain to Australia via Dubai but was seen on social media in the 14 days prior to his arrival in his native Serbia with handball player Petar Djordjic.

Djokovic, who trained at Melbourne Park on Tuesday, was released from detention on Monday after winning his appeal and having his visa reinstated.

However, Immigration Minister Alex Hawke said in a statement on Tuesday that he will investigate the claims of Djokovic's false declaration.

“In line with due process, Minister Hawke will thoroughly consider the matter,” a representative said.

Mr Hawke has the power to cancel Djokovic's visa, which would force his deportation ahead of the Australian Open which is due to commence on January 17.

On Monday, Djokovic posted to Instagram: “I’m pleased and grateful that the Judge overturned my visa cancellation. Despite all that has happened, I want to stay and try to compete @AustralianOpen I remain focused on that.

“I flew here to play at one of the most important events we have in front of the amazing fans.”

Kyrie Irving finished with 22 points in his second game back but could not inspire the Brooklyn Nets to victory as they went down to a depleted Portland Trail Blazers 114-108 on Monday.

Anfernee Simons starred with 23 points, six rebounds and 11 assists for the Blazers who were missing Damian Lillard (abdomen).

The Nets were also without James Harden (knee), but had Kevin Durant (28 points, 10 rebounds, five assists) and Irving (22 points, eight rebounds, four assists) on court.

Durant's points return marks 19 straight games with 20 or more points, which is the second-longest streak of 20-point games in franchise history.

The defeat means the Nets are 25-14 and second in the east while the Blazers improve to 16-24.

Giannis cannot lift Bucks

Giannis Antetokounmpo scored 26 points with 13 rebounds and eight assists but it was not enough as the Milwaukee Bucks lost their second straight game, going down 103-99 to the Charlotte Hornets. Khris Middleton had 27 points, seven rebounds and 11 assists for the Bucks.

First draft pick Cade Cunningham scored a career-high 29 points to lead the Detroit Pistons to an upset 126-116 win over the Utah Jazz, who were without Rudy Gobert again.

Joel Embiid scored 31 points with eight rebounds and six assists for the Philadelphia 76ers who beat the Houston Rockets 111-91.

Tatum cool as Celtics win in OT

Jayson Tatum went zero-of-seven from beyond the arc and shot at 33 percent from the field for his 24 points as the Boston Celtics edged the Indiana Pacers 101-98 in over-time. Domantas Sabonis had a triple-double for the Pacers.

Tampa Bay Buccaneers head coach Bruce Arians says it would be a "travesty" if 44-year-old quarterback Tom Brady does not win the MVP award.

Brady had 485 completions from 719 passing attempts for 5,316 yards and 43 touchdown passes across the regular season, which was the league-best across all categories.

The Bucs QB becomes the third quarterback following Drew Brees (2018) and Peyton Manning (2013) to lead the league in all four major statistical categories since 1991. Brady's 485 completions was an NFL single-season record.

Brady produced a three-touchdown display in the Bucs' 41-17 win over the Caroline Panthers on Sunday to reinforce his credentials with the home crowd chanting "MVP!".

"I think if he doesn't get it, it's a travesty," Arians told reporters on Monday. "Most completions ever, 5,000 yards, touchdowns - the whole nine yards. To me, it's not even a close race."

Brady's 5,316 passing yards was also the third-most in NFL history, beating his own personal record of 5,235 yards from 2011.

Bucs tight end Rob Gronkowski said: "It just shows what his work ethic is, how dedicated he is to the game of football and just how talented he is.

"Just his determination week in and week out - it's just unbelievable. And it's just surreal how he's pulling it off at age 44 and just coming out here like he's in his 20s still, just winging that ball, zipping it where it needs to be, making fantastic throws week in and week out."

Gronkowski added: "Tom's the MVP every year. Just the way he adjusts on the fly to his personnel, just trying to get the ball into the best players' hands or the best matchup on that current play - he's just always ready to go no matter what the situation is. He's the MVP every year."

Brooklyn Nets head coach Steve Nash allayed fears of a serious knee injury for 2018 MVP James Harden who was left out of the side to play the Portland Trail Blazers on Monday.

Harden, who is averaging 22.4 points, 8.1 rebounds and 9.7 assists this season, missed the game due to a left knee hyperextension.

Nash revealed Harden did not require an MRI on the knee and that the Nets were taking precaution.

"I think we're being overly cautious," Nash told reporters prior to Monday's game.

"A heavy stretch of games. Expect him to play Wednesday [against the Chicago Bulls]."

Kyrie Irving, who is only eligible for road games due to his vaccination status, will play in the game away to the Trail Blazers.

"It would be great if we didn't have to get him up to 40 [minutes] tonight," Nash said. "But at the same time, I think he's got the bulk of his preparation and his legs and is ready to play as much as needed ... you don't want to play him 44 minutes tonight, then he's got to turn around and play a big game on Wednesday.

"So we'll play him more minutes, but we would love for it to be gradual and a strategic allocation of minutes, not just like, 'All right great, we got a new Ferrari and we're going to rack up the miles.'"

The Arizona Cardinals remain uncertain on the availability of running back James Conner for their Wild Card game against the Los Angeles Rams due to injured ribs.

Conner left Sunday's 38-30 defeat to the Seattle Seahawks nursing his ribs after 15 carries for 52 yards and two touchdowns.

Cardinals head coach Kliff Kingsbury said the side's medical staff were still evaluating Conner's condition ahead of Monday's game.

"He’s still being evaluated . . . hopefully, it’s not too serious," Kingsbury told Arizona Sports 98.7. "But we won’t know for the next couple days."

Conner had missed the Cardinals' previous two games due to a heel injury before making his comeback against the Seahawks.

The 26-year-old finished the regular season with an NFC-high 18 touchdowns, 15 rushing and three receiving. He ranked third in the NFL, behind only Austin Ekeler and Jonathan Taylor (both 20).

Conner has had 202 carries for 752 yards this season along with 37 receptions for 375 yards.

Indianapolis Colts head coach Frank Reich says his side has been left with a "scar" after missing the playoffs following Sunday's shock 26-11 loss to the Jacksonville Jaguars.

Indianapolis needed only to beat a two-win Jaguars team to secure their place in the postseason but were humbled, allowing the Pittsburgh Steelers to clinch a playoffs spot.

Quarterback Carson Wentz was sacked six times in a game the Jaguars led the entire way, with the Colts having not won in Jacksonville since 2014.

The Colts finished the season with back-to-back defeats to slip to a 9-8 record and second in the AFC South behind the Conference-leading Tennessee Titans.

"It was hard to imagine after the Arizona game, we get to 9-6, we feel like we’re one of the two or three teams to beat, a team everybody’s talking about," Reich told reporters on Monday.

"When you think about how all this was going to end, certainly, no one including myself, really, ever thought it would end like it did the last two weeks.

"That’s something that can’t be undone. It’s part of our record. It’s part of my record. … It’s a scar."

Reich revealed that he met with team owner Jim Irsay and general manager Chris Ballard for several hours after the Jaguars defeat.

“It was a good conversation, a supporting conversation, but also demanding and wanting answers, [with Irsay] wanting to hold us accountable,” Reich said.

He added: "‘We’re going to get better.' … We walked out of there saying, ‘We’ve got a lot of the right pieces in place.'"

Ralf Rangnick believes Scott McTominay could be Manchester United captain in "a couple of years" and hailed the "outstanding" David de Gea following a 1-0 FA Cup win over Aston Villa.

McTominay scored the only goal of the third-round contest at Old Trafford on Monday, heading home midfield partner Fred's inviting whipped cross after only seven minutes.

That was enough for the Red Devils to set up a fourth-round tie at home to Championship side Middlesbrough, but Villa were unfortunate to crash out as they were the better side.

Danny Ings had a goal ruled out for a foul by Jacob Ramsey on Edinson Cavani following a lengthy VAR check, referee Michael Oliver eventually making the decision after being told to check the pitchside monitor.

Ollie Watkins struck the crossbar in the first half and also had a goal disallowed due to Ings being offside soon after his fellow striker's goal was chalked off.

Amid talk of unrest in the United dressing room following a 1-0 defeat to Wolves, there was relief for Rangnick after a fortunate victory.

The interim Red Devils boss picked out McTominay and De Gea for praise after an unconvincing display from his side.

Asked about McTominay's contribution, he told BBC Sport: "He is an academy boy, his energy is amazing. He now also starts scoring goals and also with some leadership skills.

"I wouldn't be surprised if in a couple of years he would be the captain of this team."

He added: "We have to develop the team into a clean sheet team and that was another one today but still David de Gea was outstanding again for me today.

"I would have wanted him to have less saves in total, I think we had four or five shots on goal but again we can still improve even in that area."

Despite United being second best for the majority of the game, Rangnick said there were signs they are improving.

Asked if he had seen progress in the performance, he replied: "Yes. To say that this was a perfect game, nobody would believe that of course it was not.

"We still have quite a few things we can get better at, but the clean sheet was important today and we worked together. There are still a lot of things to improve but it is easier to do that with a 1-0 win."