The Washington Wizards will be without star Russell Westbrook for at least a week due to a left quadriceps injury.

Westbrook will be re-evaluated at the end of the week after suffering repeated contact to the area since the start of the NBA season, the Wizards announced on Monday.

It is a blow for the Wizards, who have slumped to 2-8 amid high expectations following Westbrook's arrival from the Houston Rockets.

Former MVP Westbrook is averaging 19.3 points, 11.3 assists and 9.7 rebounds per game in seven appearances for the Wizards this season.

Westbrook has already made some history since swapping the Rockets for the Wizards in a blockbuster trade.

The nine-time All-Star joined Hall of Famer Oscar Robertson as the only players in NBA history to open a season with four triple-doubles in their first four games.

Brooklyn Nets star Kyrie Irving will miss his fourth consecutive game, the NBA franchise announced on Monday.

Irving has been sidelined due to personal reasons and his absence will continue for Tuesday's clash with the Denver Nuggets.

When asked for an update on Irving's status, Nets head coach Steve Nash told reporters: "I do not have any updates, sorry".

While star team-mate Kevin Durant returned in Sunday's loss to the Oklahoma City Thunder, NBA champion and six-time All-Star Irving was missing once again.

Irving is averaging 27.1 points, 6.1 assists and 5.3 rebounds per game in Brooklyn this season.

The Nets (5-6) have lost back-to-back games to sit 10th in the Eastern Conference, behind the eighth-placed Charlotte Hornets (5-5).

Joan Laporta and Victor Font are among four candidates who look set to do battle for the Barcelona presidency later this month. 

Laporta, Font, Toni Freixa and Emili Rousaud all delivered signatures from enough socios on Monday to advance to the election on January 24. 

Laporta, previously president for a decorated period between 2003 and 2010, presented 10,272 signatures, significantly ahead of Font's 4,713, Frexia's 2,822 and Rousand's 2,510.

Validation of these signatures will begin on Tuesday, with confirmation of the final candidates announced on Thursday. 

Jordi Farre, Xavier Vilajoana, Agusti Benedito, Luis Fernandez Ala and Pere Riera were unable to meet the threshold of 2,257 signatures.

Given the small amount by which he passed the cut-off total, Rousand might yet miss out on the final run-off.

Barca last week ratified January 24 as the date for their presidential election despite calls for it to be postponed amid rising cases of coronavirus.

The region of Catalonia has recently imposed new restrictions in an attempt to slow the spread of COVID-19 infections, with certain rules tightened for 10 days as of January 7.

While that does not interfere with the previously agreed date for the election, there had been increasing clamour for it to be delayed due to fears some members would not be able to vote.

But Barca confirmed on Thursday that the date of January 24 and "all procedures" have been accepted by the local authorities.

These are uncertain times for the NBA as it continues to navigate the coronavirus pandemic.

COVID-19 protocols have left rosters lighter in number and, with contract tracing having a major impact, it is far from surprising to see games being postponed.

The absences have offered some players greater opportunities to impress in the embryonic stages of a shortened season that will require adaptability from all involved.

After an eventful week, Stats Perform assesses those performers who have stood out - for good and bad reasons - in games from January 4-10.

RUNNING HOT...

Bradley Beal 

It has been a tough start for the Wizards, who are stuck in the basement of the Eastern Conference. Beal, however, has excelled amid the defeats. He is averaging 35 points per game for the season but has been particularly spectacular in recent outings, including dropping 60 against the Philadelphia 76ers. While it set a new career best for points - and tied a franchise record too - Beal made clear he is not interested in personal milestones: "I just want to win. Sometimes you might be able to score 40, 50, 60, whatever the case may be, but I just want to win".

Tyrese Maxey 

The 21st pick in the 2020 draft had scored a combined tally of 52 points through his first nine NBA appearances. Then, amid injuries, positive COVID tests and coronavirus-enforced isolations, Maxey was thrust into a leading role as one of just seven players available against the Denver Nuggets on Saturday. His response to the situation was to score 39 points in just under 44 minutes of action, having taken 33 shots but no free throw attempts. In doing so, he became the first 76ers rookie with at least 35 points in a game since franchise legend Allen Iverson in 1997. 

Jimmy Butler 

Butler has begun to heat up after a cold start to the new campaign for Miami. The five-time All-Star had been hampered by injury issues but has looked back to somewhere near his best of late, managing 18, 26 and 26 points in his past three games. Surprisingly, though, Butler is still yet to manage a successful three-point attempt, missing on his seven shots from deep so far. It is a different story from the free-throw line, though, going 28 of 29 from the charity stripe.

LaMelo Ball 

The rise and rise of the youngest Ball brother continues. The point guard became the youngest player in NBA history to score a triple-double as Charlotte Hornets beat the Atlanta Hawks on Sunday. At 19 years and 140 days old, Ball had 22 points, 12 rebounds and 11 assists. He had narrowly missed out on achieving the feat in his team's previous outing, against a New Orleans Pelicans team that included older sibling Lonzo. His rebounding average has gone from 4.33 a game to 9.25 across the past week. 

GOING COLD...

James Harden  

The NBA's scoring champion for the previous three seasons, Harden is still averaging 26 points per game despite continued doubts over his long-term future in Houston. However, it has not been a particularly productive week for the guard, who has not reached double digits in terms of field goals made in four straight outings. There were 15-point displays against both the Pacers and the Magic, then 20 points in a defeat to the Lakers. Across that stretch, Harden was six for 22 from three-point range. Astonishingly, he did not attempt a solitary free throw against Orlando. 

Trae Young 

To say Young has gone cold from deep recently is an understatement. The Atlanta Hawk landed five of six attempts in the season-opener against the Bulls, but since then has managed just nine successful long-range shots, including going a combined one for 14 in his most recent three appearances. Understandably, then, his average for points per game has dipped from 28.17 on January 3 to 17.67 for the past week.

Russell Westbrook 

A quadriceps injury will keep Westbrook sidelined for at least a week. His early form with the Wizards has been steady, including reaching double digits for points in all of his seven games for the franchise. Where there has been a dip for the former NBA MVP is in rebounding. He was up at 11.20 per game for the season by January 3, but he has averaged 6.00 for the past week following reduced contributions in defeats to the 76ers and the Celtics.

Blake Griffin  

Griffin hit with eight of 16 three-point shots for Detroit against the Cavaliers on December 26, but his output from long range since suggests that number could prove to be a post-Christmas outlier when compared to the rest of the season. In the past week, the 31-year-old has landed two from deep out of 18 tries for the struggling Pistons. His overall field goal percentage is down on his career mark too (37.6 per cent from 49.7 per cent), explaining why he is averaging 13.9 points per game. 

The Philadelphia Eagles have fired head coach Doug Pederson, according to reports.

Pederson had been said to be meeting with owner Jeffrey Lurie to outline his plans for the future, with his position thought to hinge on that discussion.

It seems he failed to convince Lurie and the franchise hierarchy to keep him in the post, with NFL Media's Tom Pelissero first reporting his firing.

Pederson, who took over in 2016, led the Eagles to their first Super Bowl title in his second season at the helm.

Philadelphia's first Lombardi Trophy came at the end of a storied playoff run, in which unheralded backup Nick Foles led them to glory after then-MVP candidate Carson Wentz suffered a serious knee injury.

The Eagles overcame the New England Patriots 41-33 in Super Bowl LII but Wentz's struggles to recapture his 2017 form following his comeback from injury played a significant role in Philadelphia's failure to scale the same heights in Pederson's subsequent three seasons.

Pederson oversaw playoff campaigns in 2018 and 2019, the latter despite a roster decimated by injury.

However, he attracted increased criticism amid a dismal 2020 season that saw a sharp decline from Wentz, who was eventually benched and forced to watch the final few weeks of a 4-11-1 year from the sideline.

His replacement, rookie quarterback Jalen Hurts, was one of the few bright spots for Philadelphia. The controversial in-game benching of Hurts in favour of Nate Sudfeld for the Week 17 loss to the Washington Football Team saw Pederson placed under further scrutiny as he faced accusations of overt tanking for draft position.

Pederson had claimed he made the move to evaluate Sudfeld, but the future at quarterback in Philadelphia is now a matter for his successor and general manager Howie Roseman.

In five seasons with the Eagles, Pederson compiled a 42-37-1 record in the regular season. He went 4-2 in the playoffs.

Manchester United will host bitter rivals and Premier League champions Liverpool in the fourth round of the FA Cup.

The European Champions Cup and Challenge Cup have been temporarily suspended after the French authorities ruled the participation of Top 14 clubs to be too much of a public health risk. 

European Professional Club Rugby (EPCR) made the announcement on Monday following a meeting last week with French government officials. 

Due to concern over a new variant of coronavirus, the French government has decided to prevent its clubs from participating in games both in France and in the United Kingdom and Ireland. 

It means the EPCR has been forced to suspend the Champions Cup with two rounds of the pool phase remaining. The Challenge Cup is in its preliminary phase. 

The development would appear to place the 2021 Six Nations, scheduled to start with a meeting between France and Italy in Rome on February 6, in jeopardy. 

Last year's Six Nations tournament was only completed in October because of the pandemic-enforced delay. 

An EPCR statement read: "EPCR and the Ligue Nationale de Rugby took part in a meeting by audio conference last week with representatives of the French ministries of the Interior, Health and Sport, as well as of the President's office. 

"Notable updates to EPCR's COVID-19 protocols were presented to the French authorities, including the addition of PCR tests no earlier than three days before matches in the tournaments, conforming to French government guidelines and supplementing the existing, meticulous contact tracing measures put in place with a view to limiting the risk of transmission. 

"Against the backdrop of the recent detection of a new strain of coronavirus, the French government has directed that French clubs postpone their participation in EPCR's tournaments for the month of January, both for matches scheduled in France and for those due to be played in the United Kingdom and Ireland. 

"On the basis of this directive, EPCR had no choice but to temporarily suspend the pool stage of the Heineken Champions Cup and the preliminary stage of the Challenge Cup. 

"While respecting all further directives by governments and local authorities, and prioritising the health and welfare of players and club staff, EPCR, in conjunction with its shareholder leagues and unions, remains committed to trying to find a solution which will enable it to resume and complete the tournaments as soon as practicable. 

"EPCR will be making no further comment at the present time." 

Leo Duarte has joined Istanbul Basaksehir on an initial 18-month loan deal from Milan.

The Super Lig side have the option to buy the 24-year-old permanently at the end of his loan deal on June 30, 2022. 

Centre-back Duarte joined Milan in August 2019 in a reported €11million deal from Flamengo. 

He made six appearances for the club last season – all in Serie A – and has appeared only three times this term across the Italian top flight and the Europa League. 

A Milan statement read: "The club would like to thank Leo for his professionalism and wishes him the best for his personal and professional future."

The top two seeds are both out at the Abu Dhabi Women's Tennis Open after Sofia Kenin and Elina Svitolina suffered quarter-final defeats on Monday.  

Kenin had won the two previous meetings against Maria Sakkari and appeared on course to retain her 100 per cent record when cruising through the opening set.  

However, Sakkari hit back to stun the top seed, dropping just two more games as she rallied in emphatic fashion to triumph 2-6 6-2 6-0 after one hour and 23 minutes on court.  

"I think I did way too many errors and I was hitting too big when I didn't have to. But I'm glad that once again I found the way to turn the match around," the ninth seed told reporters.

Next up for Sakkari will be Aryna Sabalenka, who extended her impressive winning run to 13 matches after coming through a three-set tussle with Elena Rybakina.  

The fourth seed has not lost since going out at the 2020 French Open to Ons Jabeur - a result she avenged when the pair met on Sunday in the last eight in Abu Dhabi.  

In the other half of the draw, Veronika Kudermetova once again got the better of Svitolina, ending the second seed’s hopes of success in the tournament. 

Russian Kudermetova – who won their only previous meeting on the WTA Tour – came out on top in the deciding tie-break to triumph 5-7 6-3 7-6 (7-3).  

She will take on another player from Ukraine next, Marta Kostyuk overcoming a nightmare opening set to beat Spaniard Sara Sorribes Tormo 0-6 6-1 6-4 and reach the last four.