Inter proved they have what it takes to maintain a serious title challenge this season by defeating reigning champions Juventus 2-0, according to Arturo Vidal.

Vidal opened the scoring against his former club at San Siro on Sunday, heading home a cross from Nicolo Barella to find the net in Serie A for the first time since his goal clinched the Scudetto for Juve in May 2015.

He became the first ex-Juve player to score for Inter in the Derby d'Italia since Christian Vieri in 2004 and the eighth player to score for both sides in the fixture.

Lautaro Martinez and Romelu Lukaku missed opportunities to add to Inter's tally but Barella made no mistake with an emphatic finish in the 52nd minute.

The Nerazzurri consequently claimed their first league win against Juve since September 2016 and their first with a clean sheet since April 2010.

Antonio Conte's side moved level with Serie A leaders Milan on 40 points and opened up a seven-point advantage over the reigning champions.

Milan can restore their three-point cushion by beating Cagliari in their game in hand on Inter on Monday, but Vidal does not think Conte's men are going to fall away.

"It's important for me and for the team. It was a very difficult game against the best team in Italy," Vidal told Sky Sport Italia.

"I am glad to have scored my first goal for Inter, very happy. I think we proved that we are up to the task of fighting for the Scudetto.

"This gives us the confidence to keep pushing, to believe we can win the Scudetto, as we beat the strongest team over the past nine years. We believe that we can go all the way."

Ahead of kick-off, Vidal was seen kissing the Juve badge on Giorgio Chiellini's training top while the pair shared a hug. He then celebrated his goal in a muted fashion.

Conte led Juve to three straight Serie A titles to start their ongoing period of dominance and finally got his first league victory over them at the fourth attempt.

Despite Inter coming out on top and Juve being seven points adrift, Conte still believes the Bianconeri are the team to beat in the race for the title.

"In order to beat a team like Juventus, which for all the Italian clubs are the reference point, we have to put in a great performance. We did that," said Conte.

"We prepared well and it's satisfying to see that we were right about the things we thought could hurt Juventus. The lads followed the plan perfectly and I am very happy for them because these are games that must give you self-belief, let you understand you are on the right path.

"We already saw the fruits of this process last season and we are continuing to see them this term. Juventus were an important reference point, a side that dominated Serie A for nine years, having done exceptional work both on the field and as a club.

"I still maintain Juve have a gap not just from Inter, but all the other clubs, but we are working to close the gap."

In what appeared to be a dig at his club, Conte added: "If people think we are the favourites now, imagine if we'd been able to work in the transfer market in August. We'd be massive favourites!"

If Juventus are "a benchmark" and "a reference point", as Antonio Conte suggested pre-match, the Inter head coach can now feel much more positive about his side's Scudetto hopes after a superb 2-0 win.

Conte, formerly the main man in Turin, had good reason to be pessimistic even as the Nerazzurri entered the Derby d'Italia four points ahead of the champions.

Juve were the only Serie A opponents against whom Conte possessed an 100 per cent losing record, beaten in each of his prior three matches against his former club.

And Inter's misery in this fixture extended beyond the start of Conte's reign, going seven without a win as Juve used meetings with the Nerazzurri to consolidate their domestic dominance.

Indeed, there was little reason heading into this match to doubt Juve's credentials, with Andrea Pirlo's side seemingly building up a head of steam in his rookie season.

The Bianconeri had followed up a shock December defeat at home to Fiorentina with four straight successes in all competitions, scoring 13 times in the process.

Among those victories was a deserved triumph at league leaders Milan. Juve had not won at both Milan and Inter in the first half of a Serie A season in 80 years; they now had the opportunity to do so in consecutive away games.

But preparations were not ideal. Cristiano Ronaldo, like opposite number Romelu Lukaku, had not been able to enjoy the week of rest he had set aside, instead called from the bench in a midweek Coppa Italia tie and forced to see out extra time.

Ronaldo played on the fringes at San Siro, his most notable involvement an 11th-minute tap-in ruled out for offside, with the clash between two of Serie A's foremost scorers not panning out as many would have imagined.

Lukaku was as influential as ever in the Inter attack, running Giorgio Chiellini ragged as he contested 15 duels, winning nine, earned three fouls and conceded two, and created three chances.

There was no goal for the forward, though, as the game was decided in the midfield, where Inter were even more impressive, setting the tone right from the outset.

Marcelo Brozovic anchored the side, Nicolo Barella buzzed all over the pitch, and Arturo Vidal - the subject of a clip on social media that appeared to show him kissing the badge of former club Juve pre-match - made clear where his loyalties now lie.

Conte had failed to offer an explanation for some slow starts so far this season but certainly had no need to worry about that issue on this occasion. By half-time, Inter's only concern could have been their failure to add to a lead secured by Vidal.

The midfielder, whose previous Serie A goal back in 2015 had won Juve the title, spread the ball wide to Barella moments after Ronaldo's disallowed goal and then ran onto the subsequent cross, towering over Danilo to nod beyond Wojciech Szczesny and offer a muted celebration.

That was one of 11 first-half Inter efforts, their joint-high this season. Juve mustered just three before the break, a joint-low for them.

But this unpredictable Inter side had led 4-1 and trailed 2-0 respectively on the previous two occasions they had attempted 11 shots in the opening 45 minutes this term.

Juan Sebastian Veron, a former Inter star, told Stats Perform News prior to this game the Nerazzurri would "need to be decisive". Despite the opener, they were anything but.

Vidal's wait for his next Serie A strike should have lasted only three minutes, but he blazed over. Then so too did Lautaro Martinez after Szczesny saved from Lukaku.

Martinez shot wide and Szczesny again denied Lukaku, before scrambling to retrieve Barella's deflected drive. A one-goal first-half deficit felt like an escape for Juve.

But if the Bianconeri were going to make their hosts pay, a swifter start to the second period would have to follow.

Instead, Inter scored with their very first shot after the break and finally the game was beyond Juve. A slipping Alessandro Bastoni's low, long pass somehow tore a gaping hole through the visiting defence and Barella, a deserving scorer, held off Chiellini and Gianluca Frabotta to finish high into the net.

Rather than call on Weston McKennie and Dejan Kulusevski to build on an advantage, as against Milan, Pirlo turned to the pair in a desperate, failed rescue bid.

Juve still had 32 minutes to forge a response after reinforcements arrived, but one strong Samir Handanovic save from Federico Chiesa was all they had to show for a period of pressure.

Inter could have added further goals on the counter yet will worry not. Indecisive, perhaps, Conte's side ended the weekend level on points with Milan. It is now for Pirlo and Juve, seven points back, to rise to this benchmark.

Lionel Messi was sent off for the first time in his Barcelona career after Inaki Williams scored a sublime goal that gave Athletic Bilbao a shock 3-2 win in the Supercopa de Espana final.

The Catalan giants were on the brink of a record-extending 13th triumph in the competition after Antoine Griezmann scored twice, either side of Oscar De Marcos' equaliser, to put Barcelona 2-1 up late on in normal time.

But Athletic, who knocked out holders Real Madrid in the semi-finals, equalised through substitute Asier Villalibre in the 90th minute and Williams scored early on in the additional period to turn the tie on its head.

Messi was then sent off in the dying moments of extra time when VAR spotted an off-the-ball incident involving Villalibre, as the Argentinian violently knocked the Athletic player to the ground.

Lionel Messi was sent off for the first time in his Barcelona career after Inaki Williams scored a sublime goal that gave Athletic Bilbao a shock 3-2 win in the Supercopa de Espana final.

The Catalan giants were on the brink of a record-extending 13th triumph in the competition after Antoine Griezmann scored twice, either side of Oscar De Marcos' equaliser, to put Barcelona 2-1 up late on in normal time.

But Athletic, who knocked out holders Real Madrid in the semi-finals, equalised through substitute Asier Villalibre in the 90th minute and Williams scored early on in the additional period to turn the tie on its head.

Captain Messi was then dramatically sent off in the dying moments of extra time when VAR spotted an off-the-ball incident involving Villalibre, as the Argentinian violently knocked the Athletic player to the ground.

Barca were seeking their silverware under Ronald Koeman but it proved to be a night they would want to quickly forget.

Marc-Andre ter Stegen palmed Ander Capa's long-range drive over the crossbar from the game's first short on target as Athletic threatened after 26 minutes.

Barca slowly found their rhythm and took the lead through their first meaningful attack, Griezmann drilling home after Messi's shot from a Jordi Alba cutback was blocked.

It took Athletic just a minute and 33 seconds to respond through De Marcos, who ghosted in to guide Williams' impressive pass over the top away from Ter Stegen.

And Garcia thought he had given his side the lead just before the hour mark, only for his header to be rightly ruled out for offside following a VAR check.

Athletic lost 3-2 to Barca when the sides met in LaLiga less than two weeks ago but they continued to look the more threatening as Williams blazed wide from inside the box.

Koeman's men appeared to have won the game in normal time when Alba again got in behind and teed up Griezmann to steer home, yet there was to be a late twist.

Captain Iker Muniain sent a free-kick into the box and Villalibre, having kept himself just onside, fired past Ter Stegen to salvage an additional 30 minutes.

Williams' moment of magic arrived three minutes into extra time as he cut inside Oscar Mingueza and curled the ball away from Ter Stegen into the top-right corner.

Barca had time to take the game to penalties but Griezmann volleyed wide at the back post from the best of their remaining chances.

What does it mean? Opportunity missed for Koeman

This competition may be fourth on the list of Barcelona's priorities this season, but Koeman targeted victory in this four-team tournament to strengthen his claims that the club are on the right track under his stewardship.

Having won four in a row in all competitions, including a penalty shoot-out victory over Real Sociedad in the semi-finals, they entered this match with momentum on their side and as heavy favourites.

Athletic may be 13 points below their opponents in LaLiga but they more than held their own in this final, outshooting their opponents 12-10 over the 120 minutes and showing a little extra cutting edge when it mattered most. The Messi red card was an alarming blight on an already desperately disappointing night for Barcelona.

Antoine at it again

Griezmann scored from two of his five shots and has now been directly involved in seven goals in four games, having failed to score or assist in his previous seven outings.

He has also scored five goals in the last four finals he has played for club and country - two for Atletico Madrid, one for France and now two for Barcelona.

Messi's moment of madness

In what was his 753rd appearance for Barcelona in all competitions, Messi was shown his first red card for an off-the-ball swing at Villalibre.

Even before that incident it was a frustrating day for the Argentina international on his return from a short lay-off as he failed to find the target from any of his three attempts.

What's next?

Barcelona switch focus to the Copa del Rey on Thursday with a trip to Cornella, though that last-32 tie could be in doubt due to reports of a coronavirus outbreak in the opposition's camp.

Athletic are up against lower-league opposition on the same day, too, as they take on Ibiza for a place in the last 16.

Rafael Stone insisted James Harden's comments after two losses to the Los Angeles Lakers did not impact the Houston Rockets' trade plans.

Harden was traded to the Brooklyn Nets days after saying he had done everything he could in Houston.

After back-to-back losses to the Lakers, the eight-time All-Star also said: "This situation is crazy. It's something that I don't think can be fixed."

But Stone said Harden's comments, which drew criticism from team-mates John Wall and DeMarcus Cousins, were irrelevant to the Rockets' plans.

"They did not affect me at all. In a trade there are multiple parties so I have no idea if it affected other teams," Stone told a news conference on Sunday.

"But I can guarantee you it did not affect us."

The Rockets acquired Victor Oladipo from the Pacers, sending former Nets guard Caris LeVert to Indiana.

As part of the Nets trade that involved the Cleveland Cavaliers, Houston also brought in Rodions Kurucs and Dante Exum, plus four first-round picks, to go with four first-round pick swaps.

Stone is happy with the deal the Rockets ended up with as he lauded two-time All-Star Oladipo.

"I don't think it's appropriate to talk about the other deals," Stone said.

"I would say what is super exciting about this deal is it gives us flexibility and in the NBA, picks, especially high picks, are the best currency. Everybody likes them, everybody values them, so that was great organisationally, it gave us flexibility to do different types of deals as they come up this year, next year, whatever.

"We were able to get Victor Oladipo as part of it along with Rodi and Dante, but Victor is a guy we're really excited about. I think he's excited to be here and we think he's very talented so that was not insignificant from our perspective."

The Rockets hold a 4-7 record this season and are 14th in the Western Conference.

Inter dealt a blow to Juventus' Serie A title defence and moved level on points with leaders Milan by securing a 2-0 victory at San Siro on Sunday.

Former Juve midfielder Arturo Vidal opened his Inter account with a 12th-minute header and Lautaro Martinez and Romelu Lukaku wasted chances to increase the Nerazzurri's lead.

The Bianconeri were unable to make the most of those reprieves as an emphatic finish at the end of a route-one move saw Nicolo Barella double Inter's advantage.

It was enough to give Antonio Conte a first Serie A win against Juve – the club he led to three straight Scudetti at the start of their ongoing run of dominance – and move the hosts level with Milan, who play their game in hand against Cagliari on Monday.

Cristiano Ronaldo had a goal correctly ruled out for offside but there was no doubt about Vidal's opener a minute later, as the Chile international rose above Danilo to nod Barella's delivery into the left corner.

Martinez should have doubled Inter's lead in the 23rd minute when he blazed over with the goal gaping after Wojciech Szczesny parried Lukaku's shot straight to him.

Striker Martinez again failed to hit the target with his next opening, while Lukaku placed an effort from Barella's cutback too close to Szczesny before half-time.

Inter finally had a second goal in the 52nd minute, Barella surging into a huge gap in the Juve defence and firing Alessandro Bastoni's ambitious pass into the roof of the net.

Andrea Pirlo responded by sending on Dejan Kulusevski, Federico Bernardeschi and Weston McKennie but Federico Chiesa had their best effort in the 87th minute.

Samir Handanovic kept out Chiesa's powerful drive with a superb reaction as Inter held on for an important victory.

What does it mean? Juve with ground to make up

Juve would have closed to within a point of Inter if they triumphed at San Siro, and they would have still had a game in hand on Conte's men and Milan.

However, they missed their chance to make up ground and are now seven points adrift of Inter.

They will find themselves 10 points off the top if Milan win on Monday, meaning winning their game in hand would still not put them firmly in the title picture.

Brilliant Barella

Italy international Barella put in a livewire performance against the reigning champions, creating a game-high three chances – including the assist for Vidal's goal – and producing an emphatic finish early in the second half. After managing one goal and four assists in Serie A last season, he has already scored twice and set up five more in the league in 2020-21.

Vidal sparks controversy

Pre-game footage showed Vidal embracing Giorgio Chiellini and kissing the Juve badge on his warm-up top. He may have followed it up by scoring his first Serie A goal since clinching the title for Juve in May 2015, but his muted celebrations led to much discussion about where his loyalties lie.

What's next?

Juve face Napoli in the Supercoppa Italiana on Wednesday, while Inter travel to Udinese in Serie A on Saturday.

It was as if he had never been away.

Luka Jovic has endured a dismal start to his Real Madrid career but was quickly back among the goals at Eintracht Frankfurt.

Having failed to impress in a season and a half in LaLiga following a €60million transfer from Eintracht to Madrid, Jovic headed back to Frankfurt on loan this week.

And a second debut swiftly followed, with Jovic called from the bench after 62 minutes at home to Schalke.

The game was all square at 1-1 at the time, with Andre Silva's first-half opener immediately cancelled out by Matthew Hoppe, the teenager whose hat-trick last week had secured Schalke's first win in 31 Bundesliga matches.

There was to be no second straight success for the strugglers, however, as Jovic required only 10 minutes to restore Eintracht's lead, hammering Filip Kostic's cutback into the roof of the net.

The loanee then made the points safe in stoppage time as he moved inside past Ozak Kabak to again finish right-footed and clinch a 3-1 win.

"You can tell that the air here is good for him," sporting director Fredi Bobic told Sky Sport afterwards. "The goals were top class, the whole process. That is a great art.

"I always get annoyed that I always have to sell the best players. Now he's back for a short time. That's what I'm most happy about."

With just two LaLiga goals to his name, the brace meant Jovic had netted as many times in 28 minutes back in the Bundesliga as in 32 matches for Madrid in all competitions.

The strikes came from Jovic's only two shots on Sunday, while he also completed 17 of his 18 passes in a lively display.

Serge Gnabry did not suffer a serious injury during Bayern Munich's 2-1 victory over Freiburg, Hansi Flick has confirmed.

Germany international Gnabry sat out last weekend's loss to Borussia Monchengladbach with a shin problem but played 90 minutes in the shock penalty shoot-out loss to Holstein Kiel in the DFB-Pokal on Wednesday.

He had to be replaced after 28 minutes at the Allianz Arena on Sunday but Flick is not expecting to be without the winger for a prolonged period.

"The injury is not serious, I have heard from the doctors. The muscle in his back cramped up," said the Bayern boss.

Bayern were leading when Gnabry departed thanks to Robert Lewandowski's 21st goal of the season, a record for the first half of a Bundesliga season, surpassing Gerd Muller's 20 in 1968-69.

Nils Petersen equalised for Freiburg in the 62nd minute, scoring just 28 seconds after coming on as a substitute. His Bundesliga record for goals after being subbed on now stands at 28.

But Leroy Sane, who replaced Gnabry in the first half, set up Thomas Muller - who registered his 125th top-flight assist on Lewandowski's opener - for the winner.

Sane was also on target against Kiel and Flick has been pleased to see him improving after a tough start to life with Bayern following his move from Manchester City.

"I don't like singling out individual players but he did very well and did things the team would like to see from him," said Flick.

"We saw good development. He proved today that he is always good for an assist or a goal."

With RB Leipzig having been held to a 2-2 draw by Wolfsburg on Saturday, reigning Bundesliga champions Bayern opened up a four-point lead at the summit.

Flick said: "I'm not interested in the table at the moment. We have to look at ourselves and be focused on Augsburg and Schalke as we are today.

"It's good to have achieved a four-point lead, that is extremely important. For us, only our results count."

Kemba Walker is available to play for the first time this season and could feature for up to 20 minutes for the Boston Celtics against the New York Knicks.

Walker has not appeared since the Celtics' Eastern Conference Finals defeat to the Miami Heat in Orlando last year.

The former Charlotte Hornets point guard has been working on strengthening his left knee in an attempt to avoid any further lay-offs in the remainder of the campaign.

Knee soreness contributed to Walker missing 16 of Boston's 72 regular season games in 2019-20, his first year after leaving Charlotte, so the team are hoping to avoid a repeat.

Walker was listed as questionable this week for the first time all season and was then upgraded to available on Sunday ahead of the game at TD Garden at 1300 ET.

Coach Brad Stevens subsequently confirmed Walker would have a restriction of around 20 minutes.

The 8-3 Celtics are still without Jayson Tatum, among others, due to NBA health and safety protocols in the aftermath of the team's coronavirus crisis.

Boston had three consecutive games postponed and their practices cancelled - contributing to Walker's delayed return - before beating the Orlando Magic 124-97 on Friday.

Walker averaged 20.4 points per game last season, trailing only Tatum (23.4) for the Celtics, while also contributing 4.8 assists, behind just Marcus Smart (4.9).

The 30-year-old's scoring dropped slightly to 19.6 in the postseason - putting Tatum (25.7) and Jaylen Brown (21.8) ahead of him - but he led the team in playoff assists with 5.1 per game.

Alpine have appointed Davide Brivio, the former boss of MotoGP team Suzuki Ecstar, as their racing director.

Renault announced the departure of team principal Cyril Abiteboul on Monday ahead of their rebrand to Alpine for the 2021 Formula One campaign, and now they have added new blood.

Brivio was linked to F1 after quitting his post with Suzuki Ecstar, who won the team and rider championships in last year's MotoGP season.

An Alpine statement read: "Davide Brivio joins Alpine F1 Team as racing director.

"We are delighted to confirm Davide Brivio will strengthen our team ahead of the 2021 Formula One season. His specific role and responsibilities will be announced in the coming weeks.

"Davide will report to the Alpine CEO Laurent Rossi.

"Davide joins Alpine F1 Team with a wealth of experience and success following more than 20 years in the MotoGP world championship.

"We look forward to welcoming Davide as we start the next stage of our Formula One journey."

Alpine's driver line-up is made up of Frenchman Esteban Ocon and former two-time champion Fernando Alonso.

Robert Lewandowski became the first player to hit 21 goals in the first half of a Bundesliga campaign with his opener for Bayern Munich against Freiburg.

Gerd Muller previously held the record of 20 goals, with the Bayern great having achieved the feat in 1968-69.

Lewandowski matched that haul on January 8, scoring in a 3-2 defeat to Borussia Monchengladbach.

On Sunday, in Bayern's 16th league game of the 34-match campaign, the 32-year-old overtook Muller by slotting home at the culmination of a superb Bayern move in the seventh minute.

It also brought up Lewandowski's fifth goal in his last four games against Freiburg.

Prolific in attack, it is at the other end where Hansi Flick's Bayern side have struggled this season.

Heading into Sunday's game at the Allianz Arena, the Bavarian side had 33 points – they last had as many points after 15 matches in 2017-18 - yet their 24 goals conceded after 15 fixtures was more than in any season since 1981-82 (25).

Lewandowksi scored 34 times in the league last season, six shy of Muller's Bundesliga record of 40 (1971-72), but the Poland star now looks well on course to challenge that tally.

Stefano Pioli confirmed Milan will consider adding further to their squad in January amid speculation Mario Mandzukic is set to join the club.

Mandzukic – who previously played in Serie A with Juventus – is a free agent after terminating his contract with Al-Duhail by mutual consent in July.

The Rossoneri are reportedly going to sign the Croatian striker on an 18-month deal, boosting their forward options as they look to maintain their push to win the league for the first time in a decade.

Pioli was not willing to discuss individual names at his pre-match news conference ahead of Monday's trip to Cagliari but did admit the club are ready to act if the right player becomes available.

"I don't want to and cannot comment on players that I don't have," he told the media. "I have a lot of confidence in the club and the management team. I leave that task to them.

"We know that if there is the possibility of strengthening the team, we will do it. We will be ready in January if there is the possibility of improving this group." 

Milan have already made one signing in the mid-season transfer window, midfielder Soualiho Meite arriving on loan from Torino.

"Meite makes a department that already had good solidity even more competitive," Pioli said of the new recruit.

"I really liked the move. We have combined quality and quantity. I also liked how he spoke, saying he was ambitious. To join our group, you have to be like that."

The Serie A leaders head to Cagliari without Hakan Calhanoglu and Theo Hernandez, both players currently isolating after testing positive for coronavirus.

Pioli admits it is a blow to be without the influential duo – they are also set to miss next Saturday's home fixture with Atalanta – but is confident he has the quality within his squad to cope with such situations during the course of the season.

"They are important absences, but this season is like that," the Milan boss said. "There are critical issues that can come at any moment, so we must always be prepared and attentive.

"The quality of the players that I will have available tomorrow will certainly make us have a good match.

"We are prepared, that's why I expect the players to always be ready. We can all be decisive and help the team."

A further 25 players have been forced into hard lockdown for two weeks prior to the Australian Open, tournament organisers have confirmed.

Tennis' season-opening grand slam was plunged into crisis on Saturday when it was announced 47 players would be consigned to their hotel rooms for 14 days and not eligible to practise.

Officials said the protocols were as a result of two passengers testing positive for coronavirus on a flight from Los Angeles that arrived on Friday morning, along with another passenger who flew in from Abu Dhabi.

That affected 24 players aboard the LA flight and 23 on the plane from Abu Dhabi, while another positive test for a passenger arriving in Melbourne from Doha on Saturday morning has taken the total number of players affected to 72.

A statement from the Australian Open read: "One positive COVID-19 test has been returned from a passenger on a charter flight into Melbourne from Doha which arrived at 5.30am on January 16.

"The passenger is not a member of the playing contingent and had tested negative before the flight.

"There were 58 passengers on the flight, including 25 players. All are already in quarantine hotels.

"The 25 players on the flight will not be able to leave their hotel room for 14 days and until they are medically cleared. They will not be eligible to practise."

About 1,200 players and staff have been arriving in Melbourne on sparsely populated aeroplanes ahead of the delayed Australian Open, which is due to get under way on February 8.

Speaking on Saturday, Tennis Australia CEO Craig Tiley insisted the tournament would be going ahead despite the chaos and the lack of preparation time for many of the playing contingent.

"It's not something we wanted to happen," he told The Today Show. "We were hoping every flight would be okay. We're in this situation, we have to deal with it.

"The Australian Open is going ahead and we'll continue to do the best we can possibly do to ensure those players, who are not in a great position, find it somewhat acceptable.

"We're planning on February 8, we do have that buffer time in there. We're looking forward to welcoming fans to the Australian Open.

"Ticket sales have been going well, we've got two weeks of great tennis and our intention is to continue with those dates."