Anthony Davis says Russell Westbrook's aggression has been key to his return to form for the Los Angeles Lakers.

Westbrook, a Los Angeles native, signed for his hometown team ahead of the 2021-22 season, having spent last campaign with the Washington Wizards.

The nine-time All-Star struggled at the start of his Lakers career, but is averaging 23.5 points, 8.9 assists and 6.9 rebounds across the past eight games.

He turned in a star performance on Tuesday as the Lakers claimed a convincing 117-102 victory over rivals the Boston Celtics.

Westbrook accumulated 24 points and provided 11 assists, and only Davis (24.1) and LeBron James (25.9) are averaging more points per game this season for the Lakers than the 33-year-old (20.4).

"I think at the beginning of the year, Russ was a little bit passive," Davis said, as reported by ESPN.

"He was trying to get guys involved, pass the ball. We told him, 'The more you're aggressive, the more it will open up for everyone else.'

"The last seven to 10 games, he's been very, very aggressive, and when he does that, it opens up the floor for everyone else as far as shooting.

"He's just been in attack mode. That's why we brought him here, to be Russell Westbrook and not anybody else but that."

Westbrook is well aware of the storied rivalry with the Celtics, given his Los Angeles upbringing.

"As a player like myself, you want to make sure you approach all games the same while also understanding the significance of this particular game," Westbrook said.

"That makes it a good win for us."

The Lakers are sixth in the Western Conference with a 13-12 record, while the Celtics (also 13-12) sit 10th in the East.

"We're disappointed as far as we were outhustled, out-toughed a little bit," Boston coach Ime Udoka said.

"It hasn't happened in a long time. They would put their head down, get to the basket and get whatever they wanted. We're better than that defensively, but a lack of effort and a lack of toughness showed tonight."

The Portland Trail Blazers have revealed CJ McCollum suffered a collapsed right clunk in a defeat to the Boston Celtics last weekend.

McCollum was injured in the final quarter of an emphatic 145-117 loss at the hands of the Celtics on Saturday.

The guard missed a 102-90 defeat to the Los Angeles Clippers on Monday and a scan revealed the extent of the damage done.

Portland stated that McCollum, who is averaging 20.5 points, 4.1 rebounds and 4.5 assists this season, will be out indefinitely.

The 30-year-old joins All-Star Damian Lillard (abdominal injury), Anfernee Simons and Nassir Little (both ankle) on the sidelines.  

Portland also lost guard Ben McLemore to a hip injury during the defeat to the Clippers, while center Cody Zeller is struggling with a bruised right quad.

Serena Williams has withdrawn from the Australian Open as she is not yet ready to make a comeback from injury.

Williams has not played since suffering a torn hamstring at Wimbledon in June.

The 40-year-old stated last month that she was "better" and planned to play in the first grand slam of 2022 at Melbourne Park.

Williams will not go in search of a record-equalling 24th major title next month, though, revealing she is not fit enough to take her place in the draw.

She said in a statement: "Following the advice of my medical team, I have decided to withdraw from this year's Australian Open. While this is never an easy decision to make, I am not where I need to be physically to compete. 

"Melbourne  is one of my favourite cities to visit and I look forward to playing at the AO every year. I will miss seeing the fans but am excited to return and compete at my highest level."

The legendary American's last grand slam triumph came at the Australian Open in 2017.

While Williams will not compete, world number one Ash Barty will participate, as will US Open champion Emma Raducanu and four-time grand slam winner Naomi Osaka.

Novak Djokovic has been included in the official entry list for the 2022 Australian Open, with Tennis Australia adamant that no loopholes are being explored.

The world number one, who has won nine of his 20 grand slam titles in Melbourne, has not yet disclosed his COVID-19 vaccination status, meaning there is doubt over whether he will be able to participate.

Every person competing or attending the grand slam next month will need to have been fully vaccinated against coronavirus.

However, despite the uncertainty, the 34-year-old was named in the official list of players for the tournament draw.

Djokovic had already been named in Serbia's team for the ATP Cup, which is to be held in Sydney, leading to speculation that he could enter Australia by travelling directly to New South Wales, which has different COVID-19 restrictions to the state of Victoria, and may then seek a medical exemption to get around the rules applying to unvaccinated travellers.

James Merlino, Victoria's deputy premier, responded to these reports, which also suggested Djokovic had the backing of Tennis Australia.

"My view on this is really clear and really simple," Merlino said on Wednesday. "Everyone's looking forward to the Australian Open and everyone who will attend – spectators, players, officials, staff – everyone is expected to be fully vaccinated.

"They're the rules. Medical exemptions are just that – it's not a loophole for privileged tennis players. It is a medical exemption in exceptional circumstances if you have an acute medical condition."

Tennis Australia responded to Merlino's comments with a statement of their own.

"Any suggestion that Tennis Australia is seeking 'loopholes' within this process is simply untrue. Adjudicating on medical exemptions is the domain of independent medical experts. We are not in a position to influence this process and nor would we," the statement read.

"Any application for a medical exemption must follow strict government guidelines based on ATAGI (Australian Technical Advisory Group on Immunisation) clinical advice. This is the same process that applies to any person wanting to enter Australia."

While Djokovic's participation is unclear, Serena Williams is a big-name absentee. The 40-year-old, who is one shy of matching Margaret Court's record tally of 23 grand slams, had been expected to play in Melbourne.

Roger Federer had already confirmed his absence, but Rafael Nadal is set to compete for the first time since August.

World number two and US Open champion Daniil Medvedev takes his place in the draw, as does 2020 Australian Open finalist Dominic Thiem.

Australian world number one Ash Barty headlines the women's field, with Naomi Osaka, US Open winner Emma Raducanu and WTA Finals champion Garbine Muguruza also in the draw.

Bianca Andreescu, the 2019 US Open champion, has decided to skip the event to focus on her mental wellbeing.

The Eastern Conference-leading Brooklyn Nets overturned a double-digit deficit to top the slumping Dallas Mavericks 102-99 in the NBA.

Dallas led by 17 points in the third quarter on Tuesday before the Nets rallied behind superstar pair James Harden and Kevin Durant.

Harden put up 23 points and 12 assists, while Durant posted 24 points to help the Nets avoid back-to-back defeats, having squandered a double-digit advantage against the Chicago Bulls.

Brooklyn have now won six straight road games. Entering the contest, they owned an 8-2 (80.0) record away from home this season – the franchise's best road record through 10 games all-time, according to Stats Perform.

The result condemned Luka Doncic's Mavericks to a fifth successive home defeat, while Dallas have dropped eight of their past 10 games.

Mavericks star Doncic finished with 28 points, nine assists and six rebounds.

Lakers take down Celtics

The Los Angeles Lakers' big three all starred in a 117-102 victory over the Boston Celtics. LeBron James had a team-high 30 points, Russell Westbrook had 24 points and 11 assists, and Anthony Davis scored 17 points to go with 16 rebounds. James has tallied 155 points in his last five games. According to Stats Perform, the only other player in NBA history to score that many points over a five-game span aged 36 or older is Michael Jordan.

Another off night for Randle

While the New York Knicks beat the San Antonio Spurs 121-109, All-Star Julius Randle endured another rough outing. Often the instigator for the Knicks, Randle made just five of his 12 shots from the field for 15 points in 35 minutes. Knicks team-mate Evan Fournier was three-of-eight shooting in a seven-point performance.

Luka Doncic admitted his conditioning and weight must improve amid criticism following the Dallas Mavericks' fifth consecutive home defeat in the NBA.

Doncic was a topic of discussion during Tuesday's 102-99 loss to the Eastern Conference-leading Brooklyn Nets, with Hall of Famer and analyst Reggie Miller critical of the two-time All-Star.

Miller said Doncic must "trim down" his physique, with reports claiming the 22-year-old reported to training camp overweight for the second consecutive year.

After posting 28 points, nine assists and six rebounds, Doncic addressed the criticism post-game.

"People are going to talk about it, yes or no," said Doncic, who made just three of his 11 three-pointers in Dallas. "I know I've got to do better."

Doncic, who led Slovenia to a fourth-placed finish at the Olympic Games in Tokyo, added: "I had a long summer.

"I had the Olympics, took three weeks off, and I relaxed a little bit. Maybe too much. I've just got to get back on track."

Doncic is averaging 25.5 points, 8.5 assists and 7.9 rebounds per game this season.

His field-goal percentage (44.4) is his lowest since his rookie season in 2018-19 (42.7), while Doncic's percentage from three-point range (32.5) was only lower in 2019-20 (21.6).

Doncic has also been dealing with an ankle injury as the Mavericks (11-12) sit seventh in the Western Conference.

"It's still painful, but I try to play and try to practice," Doncic said of the ankle. "But it's still painful."

Ash Barty has won the WTA's Player of the Year award for a second time, while Emma Raducanu's sensational 2021 season was capped with the Newcomer of the Year prize on Tuesday.

Barty collected the tour's top individual year-end award in 2019, having won the French Open and finished that season as the world number one.

And after Sofia Kenin succeeded her in 2020, Barty is back on top this year.

This was the third straight season the Australian superstar claimed the year-end number one ranking, and it saw her land a second major title at Wimbledon. Barty's five WTA titles in 2021 were unsurpassed.

But she has had to share the limelight in recent months with Raducanu, and that was the case again as the 19-year-old Briton was unsurprisingly hailed as the tour's star newcomer.

Raducanu became the first qualifier to win a grand slam when she swept to glory at the US Open, having also impressed in a run to the last 16 at Wimbledon.

The teenager, who has risen from 343rd to 19th in the rankings in the past year, won 10 straight matches without dropping a set from the first qualifying round to the final at Flushing Meadows.

Elsewhere, Roland Garros champion Barbora Krejcikova collected a pair of awards, scooping Most Improved Player and, alongside Olympic, WTA Finals and French Open-winning partner Katerina Siniakova, the Doubles Team of the Year.

Carla Suarez Navarro, who retired in 2020 and was then diagnosed with Hodgkin's Lymphoma, returned to the tour cancer free in 2021 for a farewell season and carried off the Comeback Player of the Year award.

Golden State Warriors superstar Stephen Curry is just 15 three-pointers shy of Ray Allen's all-time record after sinking seven more in Monday's 126-95 win over the Orlando Magic.

The three-time NBA champion and two-time MVP is chasing down Allen's regular season benchmark of 2,973 made threes and moved to 2,958 against the Magic.

Curry was successful with seven of his 13 attempts from beyond the arc, including a stunning half-court buzzer-beater at the end of the first quarter, finishing with 31 points and eight assists in the game.

With Allen's record moving into view, Curry was asked if he could match that mark in Wednesday's home game against the Portland Trail Blazers and simply replied: "Anything is possible."

If he were to achieve the feat by making 15 in one game, Curry would also top team-mate Klay Thompson's single-game record of 14 threes made.

Thompson shot 14 of 24 from deep against the Chicago Bulls in October 2018, taking that record from Curry, who had made 13 of 17 against the New Orleans Pelicans in November 2016.

"What is it, 15?" Curry said of tying Allen's record. "That's funny because I know what that means is Klay's record and all that, too. So we will see. 

"If you've seen the way I've played, especially recently, I'm not shy about shooting the ball, so the game will dictate what that looks like. I'm not coming out with that as the true goal of how I play, but crazier things have happened."

When asked the same question, Warriors coach Steve Kerr said: "I'm guessing he's going to shoot a lot against Portland on Wednesday.

"He's Steph Curry, so anything's possible."

Curry has averaged career highs in three-point shots attempted (13.2) and made (5.5) per game this season, although he has yet to reach double-figures for made threes in a single game in 2021-22, four times finishing on nine – each of those coming over a sensational six-game stretch in November.

Los Angeles Lakers superstar LeBron James has defended coach Frank Vogel after an inconsistent start to the NBA season.

The Lakers, one of the pre-season favourites for the championship, are 12-12 after Friday's defeat to the Los Angeles Clippers and sit seventh in the Western Conference.

With a roster that boasts talent such as James, Anthony Davis, Russell Westbrook, Carmelo Anthony, Dwight Howard and Rajon Rondo, more was expected from the 2020 champions, with coach Vogel coming in for recent criticism.

"I think criticism comes with the job, you know?" James said after practice on Monday. "Frank is a strong-minded guy. He has a great coaching staff. And we as his players have to do a better job of going out and producing on the floor.

"We're a team and an organization that don't mind some adversity, that don't mind people saying things about us, obviously, because it comes with the territory."

Vogel has an overall record of 106-61 (.635) with the Lakers, the sixth-best winning percentage of any coach in their history with at least 100 games.

James was back in the Lakers line-up for the Clippers game after returning two negative COVID-19 tests, posting 23 points and 11 rebounds in the 119-115 loss.

The 36-year-old entered the NBA's health and safety protocols last week, sitting out the 117-92 win over the Sacramento Kings due to a positive coronavirus test, but cleared the league's COVID protocols after additional testing confirmed the four-time champion and MVP was not a positive case.

"We have a lot of guys on this team that have been bulletin-board material for quite a long time, so it don't quite bother us," James added. "Everything that we do stays in house when it comes to our preparation and how we prepare for our next opponent and how we prepare to get better.

"Frank doesn't care and we don't either about what people are saying."

Joel Embiid is "not even close" to feeling fully fit despite producing his best performance of the season to inspire the Philadelphia 76ers past the Charlotte Hornets on Monday.

Last season's MVP runner-up posted a season-high 43 points, 15 rebounds and seven assists in his fifth game back following a three-week spell on the sidelines with COVID-19.

Embiid scored six of Philadelphia's eight points in the 127-124 overtime win as he recorded his 10th career 40-point, 15-rebound game for the 76ers – only Hall of Famer Wilt Chamberlain (30) has more in franchise history.

He took 20 shots in total from the field and missed just five of them, while also knocking down 12 of his 14 attempts from the foul line, but the 27-year-old feels he still has more to give once fully over his recent bout with coronavirus.

"I'm not even close," he said in his post-game interview when asked if he is now feeling 100 per cent. "I'm still feeling it. I get tired easily, feel pretty weak, but every single day I'm slowly getting better. 

"I've just got to keep pushing myself. My teammates, they push me. They want me to be making all the plays offensively and defensively, so as long as I got that trust I'm still going to keep pushing."

The returning Tobias Harris had 21 points and 11 rebounds as the 76ers moved to 13-11 for the season with their first back-to-back wins in a month.

Harris was particularly impressed by the performance of team-mate Embiid, who is averaging 23.9 point per game in 2020-21, down on the 28.5 across 51 games last time out.

"He's so dominant out there, especially when he is able to get his position on the floor," Harris said. "He's able to punish a team.

"They threw different guys at him, but he's so much bigger and stronger."

World number one Novak Djokovic has committed to playing the ATP Cup in Sydney amid ongoing uncertainty over his title defence at next month's Australian Open.

Djokovic has been unwilling to confirm his place at January's Australia Open due to the COVID-19 mandate in Victoria.

The state of Victoria, where the year's opening grand slam takes place at Melbourne Park, has introduced a vaccine mandate for professional athletes and across most industries due to the coronavirus pandemic.

Djokovic's father, Srdjan, said the nine-time Australian Open champion is unlikely to feature in Melbourne unless vaccination rules are relaxed.

But in a boost for the slam's organisers, Djokovic was named in top-seeded Serbia's team for the third edition of the ATP Cup, which will take place in Sydney from January 1-9.

"We're excited to host the third edition of the ATP Cup in Sydney in 2022," said ATP Cup tournament director Tom Larner.

"The playing group enjoy representing their countries and to see 18 of the world’s Top 20 players commit to the event is testament to that.

"The event shows off the passion the playing group have for this format and we look forward to welcoming all 16 teams to Sydney later this month."

The 2021 Australian Open went ahead, albeit in February instead of January, and without fans for most of the tournament following a snap lockdown of Melbourne due to COVID-19.

Djokovic – winner of a joint-record 20 grand slam titles – was among the players critical of the conditions athletes endured prior to this year's Australian Open, with strict quarantine measures introduced.

Joel Embiid produced a monster double-double to lift the Philadelphia 76ers past the Charlotte Hornets 127-124 in overtime.

Embiid carried the 76ers (13-11) to victory away to the Hornets on Monday, posting a season-high 43 points, 15 rebounds and seven assists.

Last season's MVP runner-up, Embiid – scorer of six of Philadelphia's eight points in OT – was 15-of-20 shooting as he recorded his 10th career 40-point, 15-rebound game for the 76ers – only Hall of Famer Wilt Chamberlain (30) has more in franchise history.

Tobias Harris added 21 points and 11 rebounds for the 76ers, who claimed back-to-back victories while extending their winning streak against the Hornets to 15 games, dating back to 2017.

Kelly Oubre Jr.'s 35 points, which included six three-pointers, was not enough for the Hornets (14-12).

Curry up to his old tricks

Stephen Curry nailed a stunning half-court buzzer-beater at the end of the first quarter in the Golden State Warriors' 126-95 rout of the lowly Orlando Magic. Curry finished with 31 points and eight assists, while Andrew Wiggins (28 points) nailed a career-high eight three-pointers.

Birthday boy Giannis Antetokounmpo had 27 and 12 rebounds to inspire defending champions the Milwaukee Bucks to a 112-104 victory against the Cleveland Cavaliers. Milwaukee won for the 10th time in 11 games on Antetokounmpo's 27th birthday.

Despite a triple-double from reigning MVP Nikola Jokic (17 points, 12 rebounds and a season-high 15 assists), the Denver Nuggets were beaten 109-97 by the high-flying Chicago Bulls.

Portland's skid continues

The Portland Trail Blazers tasted defeat for the third consecutive game after going down 102-90 to the Los Angeles Clippers. The shorthanded Blazers – playing without All-Star Damian Lillard – have lost six of their last seven games and have the worst defence this season.

The Chicago Bulls will be without DeMar DeRozan against the Denver Nuggets on Monday after the star entered the NBA's health and safety protocols.

DeRozan is the third Bulls player to go through the league's COVID-19 protocols, joining team-mates Coby White and Javonte Green.

It remains to be seen how long four-time All-Star DeRozan will be sidelined in Chicago, where the new-look Bulls (16-8) have made a strong start to the season.

DeRozan has fuelled the Bulls, earning Eastern Conference Player of the Week honours having averaged 30.3 points and 5.7 rebounds while shooting 58.7 per cent from the field.

Entering Monday's play, DeRozan – who leads the league in points (633) – has been averaging 26.4 points per game, his best mark since the 2016-17 season.

DeRozan has also averaged 5.3 rebounds and 4.1 assists, while shooting 49.8 per cent from the field and 33.3 per cent from three-point range – the 32-year-old only managed better in 2015-16 (33.8).

Chicago defeated the Eastern Conference-leading Brooklyn Nets 111-107 on Saturday while outscoring their opponents 32-25 in the fourth quarter. The Bulls are averaging 28.3 points in the fourth quarter this season, the most in the NBA, according to Stats Perform.

Against the Nets, Zach LaVine poured in 31 points while DeRozan scored 29. This season, the Bulls are 9-2 when both players score at least 25 points and 7-6 when only one or neither hit that mark.