Mason Greenwood has signed a new contract at Manchester United that ties him to the Premier League giants until June 2025.

United said the deal includes the option for a further year, emphasising their belief that academy product Greenwood, 19, is poised to play a big part in their future.

The teenage forward has emerged among Europe's leading players in his age group, having made his debut as a 17-year-old and been a regular within the first-team squad ever since.

Manager Ole Gunnar Solskjaer said Greenwood, who joined United's youth system as a seven-year-old, is primed to be a big part of the team in years to come.

"Mason is a fantastic talent and yet another fine example of the type of player that our academy produces," Solskjaer said. 

"He has made great progress this season, showing real maturity and adaptability to his game, which has seen him develop into one of the best young players in the country."

Solskjaer believes Greenwood, who has scored just once in 18 Premier League appearances this season, has boundless scope for improvement in his game.

The United boss told the club's website: "Whilst it is easy for people outside of the club to forget that Mason is just 19, it is our job as coaches to ensure he reaches his phenomenal potential and every step we take is to help him along that path.

"Mason is naturally gifted and has a brilliant attitude; we know how important he is going to be for Manchester United over the coming seasons."

Greenwood's previous deal, signed in October 2019, would have taken him through to the end of the 2022-23 season.

Now, along with the likes of Marcus Rashford, he looks like being a long-term piece of United's first-team dressing room.

Greenwood, who has one England cap, said: "I've worked so hard to reach this level and the last two years have been amazing. 

"There is so much that I want to achieve in the game and I know that this is the perfect environment to play my football.

"With the support from the manager, his coaching staff and so many great players to learn from; I know that I am developing every single day. 

"There is a lot more to come from myself and this team and I am so committed to working hard week in, week out to help the group achieve success.

"I want to repay the club for the support that everyone has given me over the years and show everyone just what I am capable of."

France had their Six Nations plans disrupted by a positive COVID-19 test that sent the squad into self-isolation on Tuesday.

The French Rugby Federation (FFR) also said head coach Fabien Galthie would be retested amid concerns he may have coronavirus.

It was another figure from within the France camp, who was not named, that returned a positive result following testing on Monday.

Announcing that news, the FFR said on Tuesday: "Following the PCR tests carried out last night in Marcoussis with the France XV, all the players tested negative, a member of the technical staff tested positive, as well as a suspicious and unproven case concerning Fabien Galthie who will be tested again this morning.

"In accordance with health protocol, all members of the team and management were isolated this morning. Interactions are kept to a minimum.

"An additional test at the National Rugby Centre will be carried out on Wednesday morning for the entire squad."

The squad are due to disperse later this week to be allowed a short time at home between matches, with France, who have won their opening two games, not in action again until they face Scotland on February 28 in Paris.

They scored a fine 15-13 win over Ireland in Dublin on Sunday to follow up the opening 50-10 victory over Italy.

The FFR statement added: "Tests will be carried out at home on Friday, as well as on Sunday evening at the National Rugby Centre when the squad reunites.

"The announcement of the 31 players for the Scotland match will take place this Wednesday evening, February 17."

Gerard Pique is in contention to face Paris Saint-Germain after being named in the Barcelona matchday squad.

Barca host PSG at Camp Nou on Tuesday as their huge Champions League last-16 tie gets under way.

Pique has not played for almost three months since being replaced in the November 21 defeat to Atletico Madrid in LaLiga.

He suffered a sprain to his right knee and partial damage to his anterior cruciate ligament.

But the defender has been named in a 21-man squad on the morning of the game, from which head coach Ronald Koeman will pick his team.

Barca followed the announcement with an excited tweet declaring Pique "is back".

As well as Pique, forward Martin Braithwaite is included after being medically cleared.

Ronald Araujo is still out, so the potential involvement of Pique alongside Clement Lenglet at centre-back will come as a big boost to Barcelona.

While former Barca star Neymar is ruled out, PSG still boast a host of attacking talent including Kylian Mbappe, Mauro Icardi and in-form Moise Kean.

Draymond Green fumed at how NBA players are being treated by teams and the league after Andre Drummond was pulled out of the Cleveland Cavaliers' game with the Golden State Warriors.

The Warriors cruised to a 129-98 win on Monday with Green registering 16 assists, tying his career high, and Steph Curry going off for 36 points.

But after the game Green talked little about the impressive outing and instead focused on the treatment of players.

The Cavs made a late call to sit center Drummond, who watched the game in street clothes, while they attempt to trade him.

Blake Griffin is in the same situation with the Detroit Pistons, with the team looking at moving him or buying him out.

Green was seen speaking to Drummond before tip-off and was frustrated when he faced the media after the game, also referencing a host of other players including James Harden.

"I would like to talk about something that's really bothering me," Green said. "And it's the treatment of players in this league.

"To watch Andre Drummond, before the game, sit on the sidelines, then go to the back, and to come out in street clothes because a team is going to trade him, it's b*******.

"Because when James Harden asked for a trade, and essentially dogged it, no one's going to fight back that James was dogging it his last days in Houston, but he was castrated for wanting to go to a different team.

"Everybody destroyed that man. Yet a team can come out and say, 'Oh, we want to trade a guy', and then that guy has to go sit, and if he doesn't stay professional, then he's a cancer and he's not good in someone's locker room, and he's the issue.

"We're seeing situations of Harrison Barnes getting pulled off the bench or DeMarcus Cousins finding out he's traded in an interview after the All-Star Game, and we continue to let this happen."

In previous seasons, Green was fined for giving his opinion that Devin Booker should leave the Phoenix Suns while Anthony Davis was punished for publicly requesting a trade.

He added: "I got fined for stating my opinion on what I thought should happen with another player, but teams can come out and continue to say, 'Oh, we're trading guys, we're not playing you.' Yet we're to stay professional.

"We talk all of this stuff about: 'You can't do this, you can't say this publicly.' Anthony Davis got fined I think $100,000 for demanding a trade, but you can say Andre Drummond's getting traded publicly and we're looking to trade him publicly, and he's to stay professional and just deal with it?

"And then when Kyrie Irving says, 'Oh, my mental health is off,' everybody goes crazy about that too. Do you not think that affects someone mentally?

"As much as we put into this game to be great, to come out here and be in shape, to produce for fans every single night, and most importantly, to help your team win, do you think that doesn't affect someone mentally?

"At some point, the players must be respected in these situations, and it's ridiculous, and I'm sick of seeing it."

Green and the 15-13 Warriors are at home against the Miami Heat on Wednesday.

Serena Williams is in the Australian Open semi-finals for the first time since she last won a grand slam title, beating Simona Halep to set up a mouthwatering clash with Naomi Osaka.

The American great gained revenge for her Wimbledon final defeat to the Romanian two seasons ago as she conjured a 6-3 6-3 win on Rod Laver Arena.

Halep dropped just four games in that stunning grass-court success in 2019, the third of four grand slam finals that Williams has lost since landing her 23rd major in Australia four years ago.

The 24th title has remained frustratingly elusive, with Williams one away from matching Margaret Court's record haul, but perhaps this is the week where that changes.

She must get past Osaka, her heir apparent as the figurehead for the women's game, but Williams showed her prowess in this match, devastatingly proving a point.

Her power won out, with 24 winners to just nine from Halep, although the 33 unforced errors from Williams showed there is room for improvement in precision.

The tone was set from the first point, Williams with a brilliant forehand service return winner on the forehand side on her way to an immediate break of serve.

Halep forced her way level but Williams raised the tempo in the sixth game and a deep forehand into the Romanian's backhand corner secured a 4-2 advantage.

Williams served out the set to love at the first opportunity but then dipped early in the second set, Halep pinching a break when the American volleyed waywardly at the net.

What proved a consistent theme was Halep's struggle to hit through her opponent, and the two-time grand slam winner could not capitalise on a 3-1 lead in that second set, dropping five successive games as the 39-year-old Williams began to turn on some vintage form.

Dismissive of the often weak Halep serve, Williams swept through to the clash with Osaka.

"I definitely think this was the best match I've played this tournament for sure," Williams said. "I had to, going up against the number two in the world. I knew I had to do better and that's what I did, so I'm excited."

Looking forward to facing Osaka, Williams said in her on-court interview: "She's such a strong player on the court and such an inspirational person off the court, which I think is really cool. I've been watching her and I'm sure she's been watching me."

Aslan Karatsev's Cinderella story and historic run continued after sensationally reaching the Australian Open semi-finals as Grigor Dimitrov struggled dramatically with injury on Tuesday.

Former world number three Dimitrov won the opening set and was on track to move through in Melbourne, but he faded alarmingly due to a lower back problem.

Karatsev capitalised to oust his much-more fancied opponent – who was barely able to walk afterwards – 2-6 6-4 6-1 6-2 on Rod Laver Arena, the Russian qualifier and world number 114 becoming the first man in the Open Era to reach the semi-finals on his grand slam debut.

The unheralded 27-year-old also became just the second qualifier to advance to the Australian Open last four after Bob Giltinan in December 1977 as defending champion Novak Djokovic or Alexander Zverev await.

Dimitrov was aiming to reach his second Australian Open semi-final and the final four of a slam for the fourth time in his career, and the Bulgarian star started well.

After being broken in the third game, 18th seed Dimitrov put the set back on serve immediately as he took control of proceedings.

Dimitrov fired down four aces, won 82 per cent of his first serves, hit six winners and made just five unforced errors, while Karatsev's unforced-error count hit 19.

But just as Dimitrov – who had not dropped a set en route to the quarters – looked like the man to beat, he wilted in remarkable scenes as Karatsev won the second set to level the match.

Dimitrov's first-serve winners dipped to 69 per cent – his second serve extremely problematic – while his unforced errors grew to 15 in the second set – and Karatsev took advantage.

The third set was a write-off for Dimitrov, who headed to the locker room for medical treatment after Karatsev cruised to a two-sets-to-love lead.

There were remarkable scenes in the third set, Dimitrov virtually conceding as he was unable to keep up with Karatsev due to the injury.

Dimitrov, who only won 12 points in the third set as he was unable to keep up with Karatsev or generate any power on his serve, emerged for the fourth set but, while he tried to will himself on, it only delayed the inevitable in sad scenes.

Data Slam: Karatsev joins Russian club
Karatsev became the fourth Russian man to reach the Australian Open semis in the Open Era, after Aleksandar Metreveli  (1972),  Yevgeny  Kafelnikov  (1999-2000)  and  Marat  Safin  (2002, 2004-05). He is also the lowest-ranked man to reach the semi-finals of a major since Goran Ivanisevic (125) at Wimbledon in 2001.

WINNERS/UNFORCED ERRORS
Dimitrov – 21/34
Karatsev – 34/44

ACES/DOUBLE FAULTS
Dimitrov – 9/7
Karatsev – 9/6

BREAK POINTS WON
Dimitrov – 4/14
Karatsev – 8/11 

Former world number one Naomi Osaka is unfazed about her record at grand slams as she eyes consistency after reaching the Australian Open semi-finals.

Osaka will face either 23-time slam champion Serena Williams or Simona Halep in the semis following Tuesday's emphatic 6-2 6-2 win over Hsieh Su-wei in Melbourne.

Three-time major winner Osaka has gone on to win the title each time she has reached the quarter-finals of a slam – beating Hsieh en route to her 2019 Australian Open triumph.

Asked about the record, Osaka told reporters: "I don't really care about the stat. Just because I've only been to four quarter-finals.

"It feels something like 20. That would be cool. But four, it's not really doing too much for me.

"I would be more impressed if I didn't lose in finals. If it says 10-0 in finals. But the fact is if I don't reach the finals, I lose in the fourth round or the third round.

"For me, I'm happy to be more consistent. I think I'm being more consistent since New York, so that's the ultimate goal for me."

Osaka – in the midst of a 19-match winning streak – overpowered veteran Hsieh on Rod Laver Arena, where the Japanese star hit 24 winners and just 14 unforced errors, while she lost just two of her 25 first-service points.

It does not get any easier for Osaka, with record-chasing Williams or two-time slam champion Halep standing in the way of a trip to Saturday's decider at Melbourne Park.

"I played both of them before I think multiple times," Osaka – confident after saving two match points against Garbine Muguruza in the last 16 – said.

"Halep, I don't really like playing her. She's someone that's really tough, someone that gets the ball back every time. For me it's definitely a mental and physical battle.

"Of course, the same goes for Serena. She's Serena, someone that I feel really intimidated when I see her on the other side of the court."

Jordan Clarkson and Ben Simmons were drawn into a high-scoring shoot-out as the NBA-leading Utah Jazz powered past the Philadelphia 76ers 134-123 in a mouth-watering showdown.

In a battle pitting the Western Conference-leading Jazz against Eastern Conference pacesetters, the Jazz came out on top thanks to Clarkson's 40 points.

Utah's Clarkson nailed a stunning eight three-pointers as he became first player to come off the bench and score 40 points in less than 30 minutes since 1991.

In response, 76ers All-Star Simmons fired up for a career-high 42 points, 12 assists and nine rebounds, and Tobias Harris put up a 36-point, 10-rebound double-double, but the 76ers could not keep up with the Jazz.

Simmons opened with a career-best quarter of 19 points to give the 76ers a seven-point lead at the first buzzer before Utah took over and claimed an eighth straight win, and a 19th win in 20 games.

Missing Joel Embiid to a back injury, the 76ers' third straight loss opened the door for the Brooklyn Nets to close the gap in the east and they obliged, posting a franchise-record 25 three-pointers in a 132-121 win over the Sacramento Kings.

Kyrie Irving put up 40 points and former MVP James Harden added a triple-double (29 points, 14 assists and 13 rebounds) to lead the Nets to a third consecutive victory as the struggling Kings fell to a fourth straight defeat.

Former world number one and two-time grand slam champion Yevgeny Kafelnikov believes it is "inevitable" that a Russian player will claim major success as the country's male trio flourish at the Australian Open.

For the first time in the Open Era, three Russian men advanced to the quarter-finals of a slam thanks to star Daniil Medvedev, Andrey Rublev and qualifier Aslan Karatsev in Melbourne.

World number four Medvedev – the 2019 US Open runner-up – will face countryman Rublev in the Melbourne Park quarters as Karatsev meets Grigor Dimitrov for a spot in the semi-finals.

Not since Marat Safin at the 2005 Australian Open has a Russian male won a slam, but Kafelnikov is excited about the future.

"We all know that it's inevitable that they're going to win a slam," Kafelnikov, who was the first Russian man to earn a grand slam singles championship via the 1996 French Open before reigning supreme at Wimbledon three years later, told ATPTour.com.

"It's a question of when and where."

Kafelnikov added: "It was really expected that two of them got to where they are. The third one is a big surprise, but a very happy surprise. I'm very happy for Aslan, finally getting his breakthrough.

"He's going to play a lot of tournaments now without any pressure for the remainder of the 2021 season in terms of getting into the main draws and a big pay cheque will also be a huge boost for him. I'm really happy for him."

Kafelnikov, who won 26 singles titles, continued: "To be honest, I would be happy if one of those guys or even both of them surpass me in terms of number of titles and weeks at number one in the world.

"I'd be happy. I'm not going to be jealous about it. My career was very successful, and hopefully they will have even better [careers]."

Australian star Daniel Ricciardo vowed to "close the gap" in the race for Formula One championship glory and the new McLaren driver is refusing to make any excuses.

Ricciardo enters his 11th season in F1 having switched from Renault to McLaren, but the 31-year-old does not expect the transition to hold him back.

Since entering F1, Ricciardo has claimed seven grand prix victories and 31 podium finishes, while he earned fifth place in the drivers' championship during the coronavirus-hit 2020 season.

After moving to McLaren to replace new Ferrari driver Carlos Sainz Jr. and pair up with the returning Lando Norris, Ricciardo has an eye on climbing the ranks.

"What I expect out of myself in 2021 is to really hit the ground running," Ricciardo said.

"Naturally it does take some time to learn a new team, a new car, but I guess I'm going to be hard on myself, not to give myself too much time.

"I think with Renault I was the same. I really wanted to be there by Melbourne, that first race, but naturally it did take a bit of time.

"I don't want to be naive but I also want to make sure I'm just leaving no stone unturned and really by the end of year I've had a big contribution to the team, moving forward and closing the gap."

Former world number one Naomi Osaka was relentless as she dismantled Hsieh Su-wei to reach the Australian Open semi-finals 6-2 6-2.

Hsieh upstaged the likes of 2019 US Open champion Bianca Andreescu en route to the quarter-finals, but the veteran was overpowered by Japanese star Osaka in Melbourne on Tuesday.

Three-time grand slam champion Osaka dominated from the outset, especially on serve – losing just two points on her first serve, as the third seed awaits record-chasing Serena Williams or Simona Halep in the final four at Melbourne Park.

Osaka emerged from the jaws of defeat in the last 16, saving a pair of match points to claim an improbable victory against last year's runner-up Garbine Muguruza.

And Osaka was a woman on a mission in sunny and warm conditions on Rod Laver Arena, where the 23-year-old broke for an early 3-1 lead.

Hsieh – the oldest player in the Open Era to make her grand slam quarter-final debut, aged 35 – had the chance to break back immediately, but Osaka held firm after fending off a pair to consolidate.

Osaka, who has gone on to win the title each time she has reached the quarter-finals of a major – beating Hsieh en route to the 2019 Australian Open crown, had another two break points saved but she still cruised in the first set.

It was a powerful but disciplined performance from Osaka, particularly on serve as she won 100 per cent of her points on first serve (12 of 12) against a helpless Hsieh.

The second set followed a similar theme – Osaka maintaining her dominance as she raced out to a 3-0 lead.

Osaka never relinquished the break, closing out the match on Hsieh's serve, with the six-time WTA Tour champion improving to 4-0 in quarter-final matches at slams, and 2-0 at the Australian Open.

Data Slam: ​Osaka extends streak
Eyeing a second Australian Open trophy, Osaka has now won 19 consecutive matches, dating back to February last year following the Tour's resumption amid the coronavirus pandemic. She last lost while on Fed Cup duty with Japan.

WINNERS/UNFORCED ERRORS
Osaka – 24/14
Hsieh – 14/23

ACES/DOUBLE FAULTS
Osaka – 7/1
Hsieh – 0/3

BREAK POINTS WON
Osaka – 4/12
Hsieh – 0/3

Los Angeles Lakers star Anthony Davis has been cleared of a suspected rupture of his right Achilles tendon following an MRI scan.

Davis, who left Sunday's 122-105 loss to the Denver Nuggets after suffering an Achilles strain, will miss Tuesday's game against the Minnesota Timberwolves and will be further evaluated by the NBA champions upon his return to Los Angeles.

The seven-time All-Star missed two games against the Oklahoma City Thunder with tendonosis in his right heel before returning in a win over the Memphis Grizzlies on Friday.

After posting 35 points against the Grizzlies, Davis only lasted 14 minutes – finishing with 15 points – as the Lakers went down to the Nuggets.

Hansi Flick admits he was satisfield to settle for a share of the points after the 'madness' of Bayern Munich’s 3-3 draw against Arminia Bielefeld in a snow-covered Allianz Arena.

Four days after the German champions lifted the Club World Cup in Qatar, Bayern found themselves in the midst of a snowstorm and 2-0 down at half-time against the Bundesliga strugglers after goals from Michel Vlap and Amos Pieper.

Robert Lewandowski hit back three minutes after the restart with his 25th league goal of the season but, within a minute, Christian Gebauer restored the away side’s two-goal advantage in a chaotic start to the second half.

Bayern coach Flick was left breathing a sigh of relief after strikes from Corentin Tolisso and Alphonso Davies saved the leaders’ blushes and kept the Bavarians five points clear of title rivals RB Leipzig.

"A lot came together in the first half and we didn't defend well," Flick told broadcaster DAZN.

"In the second half the team again showed a mentality, that was madness. 

"Today you just have to say that we have to be satisfied with the 3-3."

He added: "We always had the feeling that we could still turn the game around. 

"We could have reacted differently after [going 2-0 down], but our team is not like that."