Philadelphia 76ers head coach Doc Rivers is not sure if wantaway All-Star Ben Simmons will play for the NBA franchise after his surprise return.

Simmons has sought a trade from the 76ers and had been willing to sit out the entire 2021-22 season before showing up at Wells Fargo Center shortly before tip-off ahead of Monday's preseason game against rivals the Brooklyn Nets.

Reports claim Simmons had not spoken directly to team officials since late August, having missed all of training camp and preseason following a disappointing Eastern Conference semi-final loss to the Atlanta Hawks last season.

Doubts remain over the disgruntled Australian and Rivers was ambiguous regarding Simmons' playing status for the championship hopefuls.

"I don't know. He's voiced that, but we'll see how that works out," Rivers told reporters when asked about Simmons' trade status on Wednesday.

Simmons has reportedly generated interest from the likes of the Minnesota Timberwolves, Indiana Pacers, Golden State Warriors, Houston Rockets, Portland Trail Blazers and Cleveland Cavaliers but the 76ers are believed to have set a high price.

It comes after Simmons was heavily scrutinised following Philadelphia's shock playoff elimination at the hands of the Hawks in 2020-21.

A three-time All-Star and elite defender, Simmons and his shooting problems were laid bare during the 2021 postseason with the top-seeded 76ers.

Former number one draft pick Simmons had no fourth-quarter field-goal attempts in his last four games of the playoffs last season. He is the only NBA player in the last 20 seasons to have four consecutive postseason games with no field-goal attempts in the fourth quarter during a season in which he was an All-Star, according to Stats Perform.

"I'm assuming he's going to play, but who knows? I can't get in anyone's head," Rivers said with the 76ers due to meet the Detroit Pistons on Friday before opening their regular-season campaign against the New Orleans Pelicans on October 20.

Rivers added: "Whether we play him or not, that's going to depend on what we see this week.

"He's coming from behind, because he hasn't been in camp, obviously. Having said that, do you rush him and put him on the floor? That's a whole other subject.

"What we see this week is how we determine everything going forward."

Simmons averaged just 10.1 field-goal attempts in 2020-21 – a career low, which dropped to 7.9 in the playoffs. It was the same story with his scoring as it dropped to a career-worst 14.3 points per game and 11.9 in the postseason – both career lows.

Then there is Simmons and free throws. He was exposed by rival teams as they regularly sent him to the line, with the Melbourne-born guard making just 25 of 73 shots in the 2020-21 playoffs. His 34.2 free-throw percentage is the lowest ever in a single postseason.

Sixers team-mate Danny Green said: "We want him back. We want him with us. When he's in the building, we'll acclimate him appropriately. We just want everybody to come here, show up and do their part, do their jobs."

"I'll be able to see when he steps on the floor where his head's at. I don't feel like he needs to explain anything to me," added Seth Curry.

Brooklyn Nets head coach Steve Nash said the decision to keep Kyrie Irving away from the NBA championship hopefuls until he is cleared to play was a "difficult" but "sound" choice.

The Nets are set to be without seven-time All-Star Irving – who remains unvaccinated – for the start of their regular season unless his coronavirus vaccine status is resolved.

Irving is ineligible to play in home games or practice in Brooklyn due to New York City mandates, with people in New York requiring at least one coronavirus vaccine to enter indoor arenas such as the Nets' Barclays Center.

While Nash and former MVP James Harden are ready to move on without Irving, the duo insisted the title-chasing Nets would welcome back the 2016 NBA champion.

"Everyone had their say," Nash told reporters after Wednesday's practice. "It takes time to make decisions like that. This is a difficult decision. But I think it was a sound one and one that makes complete sense to everyone.

"We are just going to move on, and if things change, it would be incredible to have him back in the fold. It was a tenuous situation to have a player in and out like that. There's more clarity, and we can focus on the future and get going."

"For guys to be able to not have the uncertainty I think is important," Nash said. "It's not kind of hanging over us. A decision was made, and I think that can be beneficial to us starting to really build and have that understanding that this is what's happening instead of we were living in a world that was very uncertain.

"We weren't sure from one day to the next what was going to change or what was going to happen. That can be difficult, and that can put an extra strain on everybody."

In 2020-21, Irving averaged 26.9 points, 4.8 rebounds and 6.0 assists per game as the Nets lost in the Eastern Conference semi-finals.

Irving enjoyed a career-high 50.6 field-goal percentage and joint-career best 92.2 free-throw percentage last season.

Harden added: "Sean [Marks], Steve [Nash], me, KD [Kevin Durant], Kyrie, we all had conversations. Kyrie believes in his beliefs, and he stands firm and strong on that. And for us, we respect it. We all love Ky. But as far as us, we have a job to do.

"Individually, myself, I am still wanting to set myself up for a championship. And I feel like the entire organisation is on the same path and we are all in this as a collective unit."

"I have no say so in that," Harden said of the Irving decision. "I can only state my opinion, and we got to continue to move forward. Obviously, we would love to have Kyrie here."

"We still have two pretty good leaders on the team," Harden continued. "Know what I mean? And obviously Ky is our leader as well. We still have myself and Kevin [Durant]. [We] have to lead, which we are pretty good at that, and go out there and be great every single night."

Andy Murray has called for more players to get vaccinated against COVID-19 ahead of the Australian Open next year.

Unvaccinated players are expected to be allowed to compete, but are likely to have restrictions imposed on them in Melbourne.

The 34-year-old voiced his support for such restrictions, explaining that he understands why they would be put in place.

"My understanding is if you're unvaccinated you're still allowed to play, it's just the rules are going to be different," Murray said.

"You might just have to leave [for Australia] a few weeks earlier than everyone else. That's the player's choice. If the local government puts that in place then I would support that.

"It would be great if more players got vaccinated. Australia, in particular, has been very, very strict over there. The public there have had to endure a painful 18 months or whatever.

"If people are going to come into the country and potentially risk an outbreak in their community, yeah, that's understandable."

Murray was beaten in the Indian Wells third round by Alexander Zverev, who admitted he had not been vaccinated in April, on October 12 and the German declined to take a side in the debate.

"I fully respect the decisions of players that are not vaccinated," Zverev said. "I also do respect the decision that the Australian government is giving.

"I don't want to be in the middle of something which I kind of am not involved in because I don't have that issue of the two-week quarantine, all that. I don't want to go against anybody here."

Mercedes boss Toto Wolff has explained why Lewis Hamilton was forced to replace his engine and take a grid penalty on Sunday, refusing to rule out a repeat before the end of the season.

The Briton's 10-place penalty after topping qualifying contributed to a fifth-place finish at the Turkish Grand Prix, with team-mate Valtteri Bottas winning and title rival Max Verstappen finishing second to move six points clear of Hamilton in the championship standings.

However, Wolff revealed that the team felt they had no choice but to take a new Internal Combustion Engine (ICE) due to issues with Hamilton's previous power unit.

He insisted there had been no tactical timing to the decision, which was needed for technical reasons.

"We had to do it," Wolff told Sky Sports. "We saw some data on the Internal Combustion unit that didn't look very promising and a DNF is a total killer for the championship.

"We've seen over the course of the season that we've had some little gremlins that we weren't completely sure where they came from and how much performance they could potentially cost.

"So we'd rather have a new engine in the pool and that we understand that can possibly go longer.

"I think we understand much better now where the root cause lies and it's something that can happen from time to time if you just have a material issue, a batch problem and these are the things you need to consider."

The replacement power unit was Hamilton's fourth of the season, but Wolff suggested that it was not beyond the realms of possibility that he would be forced to take a fifth before the end of the campaign.

"The fourth one can last until the end of the season but there could be a moment where we say is it worth taking a fresh one because the other one is still at risk," Wolff continued.

"So this is something that is going to be really a work in progress."

There are six races to go in the 2021 Formula One season, a run that starts with the United States Grand Prix - an event Hamilton has won a record six times - on October 24.

Andy Murray is looking to give his body time to recover before the end of 2021 after going down to a narrow defeat against Alexander Zverev at the Indian Wells Masters.

Third seed Zverev triumphed 6-4 7-6 (7-4) in a hard-fought third-round battle with Murray on Tuesday.

Three-time grand slam winner Murray had previously defeated Adrian Mannarino and rising star Carlos Alcaraz in California.

He then ran Zverev close, with the German saying afterwards he felt Murray had produced his best performance since returning from hip surgery.

Murray agreed there were positives to take from his run, but was again frustrated not to get a statement win, having also fallen in five sets to Stefanos Tsitsipas at the US Open.

The Briton may play ATP Tour events in Antwerp and Vienna over the next fortnight but is soon eyeing a break that means he will not be putting himself forward for the Davis Cup Finals, which take place over 10 days from the end of November.

Recovering some freshness and spending time with his family are on Murray's agenda ahead of the Australian Open early in 2022.

"I've given a lot to the Davis Cup, and sometimes to my own detriment physically," Murray told BBC Sport after the loss to Zverev.

"The same thing happened last time I played Davis Cup at the end of 2019. I know there was coronavirus, but I was struggling with that really up until September time the following year.

"I also don't feel right now I would be playing, either. Obviously that would be up to [Team GB captain] Leon [Smith], but I'm not sure I deserve to play in that team.

"Right now, I'm not planning on playing the Davis Cup and with the late finish to it, and early departure to Australia, with my schedule between now and the end of the year, I am going to have to rest and take a break and give my body a chance to breathe.

"And I want to make sure in the offseason I get to spend as much time with my family as I can because I have been away from that recently and that will be case when I go to Australia as well."

On the defeat to Zverev, Murray said: "The positive for me to take from it is I had opportunities again.

"I didn't feel like I played a great match and still had chances, so that's positive. But I'm disappointed because I want to be winning these matches. I haven't in the past few months."

Both players forced six break points each and fired down eight aces apiece in an even contest.

Murray broke Zverev three times across the two sets and led in each of them, but ultimately it was the world number four who progressed to book a tie with Gael Monfils in the last 16.

It was the first time Zverev had beaten Murray in three attempts and he has now triumphed against each of the Big Four, with previous wins over Novak Djokovic, Rafael Nadal and Roger Federer to his name.

The Seattle Kraken fell just short in a thrilling comeback attempt as they made their NHL debut at the Vegas Golden Knights on Tuesday.

Trailing 3-0 in the second period, Seattle got their historic first goal through Ryan Donato before Jared McCann made it 3-2 just 72 seconds later.

Morgan Geekie levelled matters in the third, but the Golden Knights got the decisive seventh goal in controversial fashion through Chandler Stephenson.

Donato, a second-round pick for the Boston Bruins in the 2014 Entry Draft, said there was enough experience across the team to know they could recover from that early deficit even though the franchise is only in its first season.

"We just came together," said Donato. "We obviously hadn't been in that situation before, but we've all played on different teams and been in that situation on other teams. We knew as soon as we got one, the others would come."

Geekie, who managed two goals and an assist on a sparkling NHL debut for the Carolina Hurricanes last March, was delighted to have been part of a moment of history in Nevada.

"It's a spectacular city and they put on quite a show," the center said. "It was more exciting than anything, and to be a part of the new franchise is something special to be a part of."

Stephenson's goal came after the puck deflected in off his skate from a pass by Mark Stone, who had forced a turnover.

It was allowed to stand after a video review determined there was no intentional kicking motion on Stephenson's part – although he admitted he did not know if the goal would count at the time.

"I wasn't really too sure," Stephenson said. "I was kind of asking around what the ruling was, and I guess it being on the outside of my skate helped."

A frustrated Kraken coach Dave Hakstol said: "I know what I saw and believed. I thought it was a kicking motion. There's a grey area on those calls."

Next up for the Kraken is a visit to the Bridgestone Arena on Thursday to face the Nashville Predators.

Walker Buehler was hailed by his team-mate Mookie Betts and manager Dave Roberts after playing a crucial role in the Los Angeles Dodgers' win over the San Francisco Giants.

The Giants had the chance to book their spot in the NL Championship Series (NLCS) on Tuesday, but they were instead blown away by the Dodgers.

Buehler, coming in off three days' rest for the first time, was at his best, giving up just one run on three hits while striking out four batters in 4.1 innings.

Betts and Will Smith both homered in a convincing 7-2 win that sets up a winner-takes-all finale at Oracle Park in San Francisco on Thursday.

"I just know when our backs are against the wall that we have a guy named Walker Buehler that ends up getting us out of it," Betts told reporters. 

"He did it again today, but we got one more game. Julio [Urias] has to bring us home."

Roberts added: "I told [Buehler] after he came out, I was like, this is something now, you've checked a box.

"You've pitched in big games, elimination games, Game 163, and all this other kind of stuff, but never pitched on short rest. And a box was checked, and you came out ahead."

Buehler himself lauded the spirit and grit the Dodgers showed to level the series at 2-2 and keep their hopes alive.

"Tonight's a great example of 26 guys coming together and figuring out a way to survive," he said.

Alexander Zverev overcame former world number one Andy Murray to reach the Indian Wells Masters last 16 as Stefanos Tsitsipas also progressed, but Matteo Berrettini lost.

Olympic Gamed gold medallist and third seed Zverev fell behind a break in both sets but battled past Murray in straight sets at the ATP Masters 1000 tournament on Tuesday.

Tsitsipas – the second seed – rallied from a set down to vanquish Fabio Fognini in the desert, while fifth seed Berrettini was a third-round casualty.

ZVEREV CLAIMS COVETED SCALP OF MURRAY

Having already defeated Novak Djokovic, Rafael Nadal and Roger Federer in his career, all that was missing for Zverev was a win over Murray to complete the 'Big Four' sweep.

Zverev added Murray to his list of scalps with a 6-4 7-6 (7-4) victory to reach the Indian Wells fourth round for the first time since 2016.

The German star has now won 19 of his last 20 matches since Wimbledon.

"He's the only one of the Big Four that I hadn't beaten yet, so I'm happy that I've done it today," said Zverev, who will clash with 14th seed Gael Monfils in the next round. "Obviously it was a fantastic match.

"I thought Andy played extremely well, maybe as well as he's played since the surgery. I hope he continues playing the same way, because tennis did miss him for a long time and I think it's good to have him back."

TSITSIPAS FIGHTS BACK

It was far from easy for Greek star Tsitsipas, who prevailed 2-6 6-3 6-4 against 25th seed Fabio Fognini.

Tsitsipas added to his ATP Tour-leading haul of match wins this season, which now stands at 53 after Fognini had been looking to score his first victory over the French Open runner-up.

Alex de Minaur – the 22nd seed – awaits after he took down 13th seed Cristian Garin 6-4 6-2 for his first trip to the Indian Wells last 16.

BERRETTINI BUNDLED OUT

Wimbledon finalist Berrettini was no match for Taylor Fritz, who surprisingly topped the Italian 6-4 6-3.

Berrettini entered the contest as the only player on the ATP Tour this season to register double-digit wins on three surfaces – 15-4 (hard), 13-4 (clay) and 11-1 (grass).

"We're coming to the end of the year, I could really use a big result," said Fritz after claiming his first top-10 win of the year. "This is just what I needed, playing one of my favourite tournaments close to home."

There will be a winner-takes-all Game 5 in the National League Division Series (NLDS) after MLB World Series champions the Los Angeles Dodgers avoided elimination with a 7-2 win over the San Francisco Giants.

The Giants had the chance to book their spot in the NL Championship Series (NLCS) on Tuesday, but they were instead blown away by the Dodgers, who levelled the best-of-five matchup at 2-2.

Mookie Betts and Will Smith homered for the Dodgers in Los Angeles, where ace Walker Buehler gave up just one run on three hits while striking out four batters in 4.1 innings.

The deciding Game 5 will take place at Oracle Park in San Francisco on Thursday.

Astros reach fifth straight ALCS

The Houston Astros will face the Boston Red Sox in the American League Championship Series (ALCS) after crushing the Chicago White Sox 10-1. Houston became the third team ever to appear in five successive league championship series. Astros star Carlos Correa tied Albert Pujols for the most playoff RBIs among active players after reaching 54, while Jose Altuve also hit his 19th postseason homer – matching George Springer and future Hall of Famer Pujols for fourth all-time.

Houston get to Hendriks and White Sox

On a rough day for the White Sox, closer Liam Hendriks conceded a three-run homer off Altuve in the top of the ninth inning. White Sox team-mate Michael Kopech allowed three runs on three hits in 0.2 innings.

Freeman sends Braves through

Freddie Freeman was the hero in Game 4, hitting a two-out home run in the bottom of the eighth inning as the Atlanta Braves came from behind to top the Milwaukee Brewers 5-4 en route to the NLCS. Freeman's 428-foot go-ahead bomb was the furthest opposite-field homer of his career. The Braves will feature in back-to-back championship series for the first time since they advanced to eight straight from 1991 to 1999.

Tuesday's results

Houston Astros 10-1 Chicago White Sox
Atlanta Braves 5-4 Milwaukee Brewers
Los Angeles Dodgers 7-2 San Francisco Giants

Dodgers at Giants

NL West rivals the Dodgers and Giants will put it all on the line in Thursday's do-or-die showdown. Both teams have won an incredible 107 games this season as the Dodgers prepare to pit Julio Urias against Logan Webb.

Iga Swiatek was knocked out of the Indian Wells Open in the round of 16, the second seed headlining the list of casualties on Tuesday.

Swiatek was swept aside by Jelena Ostapenko in the battle between two previous French Open champions in the desert.

Elina Svitolina, reigning Roland Garros champion Barbora Krejcikova and US Open runner-up Leylah Fernandez were also sent packing from the WTA Premier 1000 event.

SWIATEK CRUMBLES

After top seed Karolina Pliskova was eliminated on Monday, 2020 French Open champion Swiatek crashed out following a 6-4 6-3 defeat to Ostapenko.

Ostapenko – the 2017 Roland Garros winner – rallied from a break down in each set to reach the quarter-finals at Indian Wells, where the 24th seed hit 25 winners to 21 unforced errors in 93 minutes.

"I knew it was going to be a very tough match because she's such a great player, she won a grand slam and she's playing great tennis," Ostapenko said.

Standing in the way of Ostapenko and the semi-finals is Shelby Rodgers, who edged Flushing Meadows finalist Fernandez 2-6 6-1 7-6 (7-4).

SVITOLINA UPSTAGED BY PEGULA

Svitolina's campaign in the desert did not go according to plan, the fourth seed crushed 6-1 6-1 by Jessica Pegula.

Pegula – the 2021 Australian Open quarter-finalist – dismantled Svitolina in just 68 minutes for her seventh last-eight appearance of the season and fourth at WTA 1000 level.

"I think I've just been making a lot of really good decisions in the right moments," said Pegula, who will face two-time grand slam champion Victoria Azarenka following her seventh top-10 victory. "That obviously comes with playing a lot of matches, winning and getting confidence... it's just been more belief that I can play at this level. I think this year, I realised that, and I've been having good results."

KERBER POWERS THROUGH AS KREJCIKOVA FALLS

Three-time major winner and 10th seed Kerber will feature in the quarter-finals after overpowering Ajla Tomljanovic 6-4 6-1.

Kerber will next meet 21st seed Paula Badosa, who shocked third seed and reigning French Open champion Krejcikova 6-1 7-5.

"I think I played a pretty good match today," Badosa said. "I knew I had to play on a high level against Barbora. She's an amazing player, very talented. We played before so I knew what I was going to find there on court. I'm feeling good and I'm very happy that I could play my best today."

Dusty Baker explained how "love" is the secret to public enemy number one the Houston Astros' success after they advanced to their fifth consecutive American League Championship Series (ALCS).

The Astros stormed through to the ALCS thanks to Tuesday's 10-1 rout of the Chicago White Sox – Houston becoming the third team ever to appear in five successive league championship series and the first to do so since the Atlanta Braves featured in eight straight from 1991 to 1999.

Houston have not been popular among opposition teams and fans after the Astros were found to have stolen signs of opposition teams en route to winning the MLB World Series three years ago, as well as for part of the 2018 campaign.

Astros general manager Jeff Luhnow and manager A.J. Hinch were subsequently fired by Houston in January after they were initially suspended for the entire 2020 campaign by the league.

Amid the backlash, the Astros have continued to perform and manager Baker hailed Houston, who will face the Boston Red Sox in the ALCS.

"They've been doing that really since last year," Baker told reporters. "And then it was accentuated this year even more. I don't know if they feed off it necessarily, but we've been constantly bombarded by negatives, you know, especially on the road.

"But these guys, they came in – they come to play, and they love each other. And I remember talking to Bill Russell years ago, a few years ago, and I asked him, man, how did you win all those championships in Boston, and he told me, you know – I thought he was going to say Red Auerbach, you know lot of hard work, but he told me that they loved each other, and they love each other.

"Love can take you to heights you never thought you could get to. And they feed off of each other and pull for each other on a daily basis. And one guy falls down, and the next guy, you know, picks him up. And, boy, this was a heck of a series. It was a downer night before last whenever we played when we got beat pretty badly, but on a daily basis, they don't take one day into the next unless it was good. You know, I love this team, and the city loves them, and that's what counts."

Astros star Carlos Correa tied Albert Pujols for the most playoff RBIs among active players after reaching 54 on Tuesday.

Houston team-mate Jose Altuve also hit his 19th postseason homer – matching George Springer and future Hall of Famer Pujols for fourth all-time.

Baker hailed Correa, saying: "Carlos has been one of the greatest big game players in the history of the Astros and even the history of the game, and I don't hear him talking about it.

"He just wants to play for his team-mates and wants to win. You know, when you win, that puts pressure on the organisation to maybe do something in the future, and this is his home. I've heard him say that many, many times. You know, he grew up in this organisation and grew up in the city of Houston.

"Just like I was talking to him just like me, I grew up with the Braves as a kid, and then you grow into a man, you realise that business is business, but you still got to play with the enthusiasm of a kid, and you play for your teammates, and hopefully that transcends to something good for us in the future."

NHL commissioner Gary Bettman said only four players have not received the COVID-19 vaccine as the 2021-22 season got underway on Tuesday.

Bettman hailed the vaccination rates prior to the season-opening game between two-time reigning Stanley Cup champions the Tampa Bay Lightning and Pittsburgh Penguins.

It comes as other sports struggle with the coronavirus virus status of some of their players – NBA All-Star Kyrie Irving will not play or practice with the Brooklyn Nets until he is allowed to be a full participant as he remains unvaccinated.

"Our vaccination rate is incredible," Bettman said. "Four players, not four percent of players. All of our officials are vaccinated. All of the personnel that come into contact with the players are vaccinated."

Bettman added: "Throughout all of this, we had great collaboration and cooperation with the players and Players' Association. This doesn't happen to get to this point without that collaboration and cooperation. Yes, the players have stepped up to get vaccinated, but even thinking about how the players had to function the last two years, to go into the bubble.

"I spent three weeks there, I get it, but there were some who had to spend eight weeks there. Having to adhere to the protocols last season so we could administer 330,000 tests to keep everybody healthy.

"The fact that we were in the bubble and I think we did 35,000 tests and didn't have one positive. Everybody banded together to do the right thing. Maybe that's why hockey is the ultimate team sport."

"We continue to reinforce the fact that everybody has to remain vigilant, particularly when we have teams traveling the way our teams typically do so we don't lose sight of this fact," Bettman said. "It's something we take very seriously."