Simona Halep said she felt "confused and betrayed" after being handed a provisional suspension for failing a drug test.

The International Tennis Integrity Agency announced on Friday the 31-year-old had tested positive for roxadustat, a prohibited substance, after providing two samples while competing at the US Open in August.

She was notified of a rule violation on October 7 and now faces a fight to avoid a ban from the sport.

In a statement, the ITIA said: "While provisionally suspended, the player is ineligible to compete in or attend any sanctioned tennis event organised by the governing bodies of the sport."

Swiftly responding, former French Open and Wimbledon champion Halep denied all knowledge of taking the substance and said the sanction was the "biggest shock" of her life.

"Today begins the hardest match of my life: a fight for the truth," she posted on social media.

"I have been notified that I tested positive for a substance called roxadustat in an extremely low quantity, which came as the biggest shock of my life.

"Throughout my whole career, the idea of cheating never even crossed my mind once, as it is totally against all the values I have been educated with. Facing such an unfair situation, I feel completely confused and betrayed.

"I will fight until the end to prove that I never knowingly took any prohibited substance and I have faith that sooner or later, the truth will come out.

"It's not about the titles or the money. It's about honour, and the love story I have developed with the game of tennis over the last 25 years."

The 31-year-old former world number one announced in September she would miss the rest of the season after undergoing nose surgery, with it unclear how long her recovery would take.

It is too early to read anything into the new NBA season. After all, the 2022-23 campaign is only getting started.

Then again, premature assumptions are all part of the fun of following sport, especially basketball.

Things began well for the Golden State Warriors as the defending champions beat the Los Angeles Lakers on opening night.

Hauls of 33 points from Stephen Curry, 20 from Andrew Wiggins and 18 from Klay Thompson were enough to see the Warriors beat LeBron James and the Lakers 123-109 on Tuesday, though they will likely expect a sterner test from the Denver Nuggets on Friday.

The visitors have two-time MVP Nikola Jokic to call on, with the Serbian showing off his abilities with a strong opening performance against the Utah Jazz on Wednesday.

Jokic recorded 27 points, four rebounds and six assists, though it was not enough to stop his team suffering defeat.

The Jazz ran out 123-102 victors, with the Nuggets defense unable to stop their opponents from scoring 75 points in the first half at Vivint Arena.

Coach Michael Malone was pleased with his team's response in the second half, but acknowledged the league will not allow you to "pick and choose".

''In that first half [the Jazz] outworked us and I think to a man everyone in [our] locker room would agree,'' Malone said. ''We looked like a different team, felt like a different team [in the second half]. But in this league you can't pick and choose when you play.''

Against a Warriors team capable of taking a game away in an instant, that has to be the main area of focus for Denver at Chase Center.

Following the Draymond Green-Jordan Poole incident that Steve Kerr described as "the biggest crisis we've had since I've been coach here", the Warriors will be hoping to further put that behind them with another home win.

Repeat their impressive showing from their opening game, and you would be a fool to bet against that happening.

PIVOTAL PERFORMERS

Golden State Warriors – Stephen Curry

I mean… who else?

Curry continued his inspired form from last season's Finals to top-score against the Lakers, recording six rebounds and seven assists on top of his 33 points, though he only shot four from 13 three-point attempts.

If he can find his range against the Nuggets, who knows how many points he could put up? Which will take pressure off his teammates and allow them to focus on stopping Jokic.

Denver Nuggets – Aaron Gordon

In reality, it's Jokic, but his high levels are almost there to be taken for granted right now.

In addition, Wednesday showed that even a brilliant outing from him does not lead to a win for Denver without others helping him, which Gordon at least did, and will likely need to do again.

His 22 points, 10 rebounds and two assists provided some support, but those points scored and rebound numbers were way up on his average for last season (15.0 and 5.9 per game) so the test will be to repeat it.

KEY BATTLES – Nuggets have to tighten it up

Although the Nuggets leaked points like a sieve in Utah, it was not due to one particular opponent running riot.

Utah's top scorer was Collin Sexton with 20, but seven Jazz players reached double figures on the night, showing that Denver did not seem capable of stopping anyone from finding the hoop.

They averaged 110.4 points against in the league last season, the 14th best in the NBA, and will surely need to keep the champions down there or below if they are to stand a chance.

HEAD-TO-HEAD

The Nuggets actually enjoyed a productive time against the Warriors last season, winning the first three meetings against them, before Golden State took the fourth. Since the start of the 2014-15 campaign, the Warriors have won 16 of their 27 clashes (Denver winning the other 11).

The PGA Tour has filed a federal civil lawsuit against LIV Golf's financial backers, Saudi Arabia's Public Investment Fund and governor Yasir Othman Al-Rumayyan, per filings in Manhattan.

The complaint, filed under seal in the US District Court for the Southern District of New York, is the latest move in the bitter war between golf's leading organisation and its breakaway opponent.

It follows the PGA Tour filing a counter-suit against LIV Golf last month, levelling accusations of interference in player contracts.

More than 30 players have been suspended from competing on the tour since their defection, while US players have been excluded from Ryder Cup consideration.

A number of players previously filed a federal antitrust lawsuit against the PGA Tour, though several – including six-time major champion Phil Mickelson – have been asked to be removed from that action.

Al-Rumayyan is also the chairman of Premier League outfit Newcastle United and heads up Saudi-owned petroleum company Saudi Aramco.

Former England and Harlequins rugby union captain Chris Robshaw has announced his retirement from the game at 36.

The back-rower, who traditionally played flanker for club and country, has brought the curtain down on a career stretching back to 2005.

Robshaw, who won 66 international caps, made his Test debut in 2009 against Argentina, and took the armband for the national team in 2012, leading them through the 2015 Rugby World Cup on home soil.

Injuries restricted chances after he was replaced as skipper by Dylan Hartley, and he was phased out before the 2019 World Cup in Japan, and finished his club career in Major League Rugby with San Diego Legion.

"After 18 years of professional rugby and a career I could only have dreamt of, I am officially announcing my retirement from the great game," Robshaw wrote in a statement posted on Twitter.

"Following three dislocated shoulders in quick succession, my body has told me to blow the final whistle.

"No words can do justice to how fortunate and privileged I am to have enjoyed a career in the sport I am most passionate about.

"Playing for and captaining England has been the greatest honour of my life and there is no comparable feeling to representing and leading your country.

"It was a responsibility I approached with respect, optimism and determination and I hope in the coming years I can use my experience and knowledge gained to support other players on their journeys."

Arizona Cardinals quarterback Kyler Murray and head coach Kliff Kingsbury have played down their heated exchange during a win over the New Orleans Saints.

The Cardinals snapped an eight-game home losing streak with a 42-34 victory on Thursday, as the visitors' stand-in QB Andy Dalton threw three interceptions.

For Arizona, Murray completed 20 of his 29 passes for 204 yards and one touchdown with no interceptions, but he also made headlines through his second-quarter row with Kingsbury.

Murray appeared to shout, "calm the f*** down" at his coach on two occasions, but insisted there was no ill feeling between the pair after the win.

"The clock was running down and we couldn't get off the play that we were trying to run," Murray said. "So, it was... I guess it's my fault. I'll take it.

"We're good. We're going to make it right. We ended up scoring so that was good. But, yes, that's all I was saying, just chill out.

"It doesn't faze me, and I don't think it fazes him. We're just trying to win. [It was an] in the moment type of thing. After that, we're good."

Kingsbury shared Murray's view of the incident, adding he liked to see such levels of competitiveness from his QB.

"I mean, it's good," Kingsbury said. "I think we are working through, as an offense, where we want to be and what we want to do. 

"When you have competitors that have a level of intensity like that, I think it will keep pushing us forward."

The Cardinals' win represented their first 40-plus-point game since January 1, 2017, breaking the longest streak in the NFL of 87 games, and took them to 3-0-4 for the season.

Heading into Week 7 of the NFL season, the picture is still delicately poised as the race for the playoffs begins to heat up.

The Philadelphia Eagles (6-0), Buffalo Bills (5-1) and Minnesota Vikings (5-1) are all on a bye this week, along with the Los Angeles Rams (3-3), which provides an opportunity for the chasing pack to close the gap.

Both New York franchises are on the road as they look to extend their winning records, the Giants in Jacksonville to face the Jaguars while the Jets tussle with the Denver Broncos, and elsewhere, the Kansas City Chiefs have a stern test in San Francisco against the 49ers.

With all that and more on the cards, Stats Perform has delved into the numbers to preview this weekend's action.

New York Giants (5-1) @ Jacksonville Jaguars (2-4)

The Giants may have season form on their side against the Jaguars but they are the only team to never win a road game in Jacksonville (0-3), who are one of two franchises the Giants have not won against away from home alongside the Baltimore Ravens.

Victory against the Ravens in Week 6, coming on home soil, saw the Giants secure a fifth win of the season and become the first NFL team this term to surpass their win total from last year (four). Their largest wins increase in the Super Bowl era was from one in 1966 to seven in 1967.

Daniel Jones' form has been key to that improvement, completing at least 70 per cent of his passes in back-to-back games for the first time in his career. He has the opportunity to become only the second Giants QB in the Super Bowl era to do so in three straight games, alongside Eli Manning in September 2018 (minimum 20 attempts each game).

The Jaguars' 2-4 record does not paint the full picture of their season, though, with a +24 point differential standing as the sixth best in the NFL and the best for a team with a losing record through six games since the 2010 Los Angelese Chargers (+31, 2-4).

In last week's defeat to the Indianapolis Colts, Trevor Lawrence completed 20 of 22 passes (90.9 per cent) to become the youngest player (23 years, 10 days) to ever record 90 per cent accuracy from at least 20 passing attempts in a game.

Kansas City Chiefs (4-2) @ San Francisco 49ers (3-3)

Kansas City face the 49ers boasting victories in four of the last five matchups, including a 31-20 triumph in Super Bowl LIV, but are 1-5 in San Francisco – with their only win there coming in the teams' first-ever clash in 1971.

The Chiefs have not been strong defensively, allowing at least 20 points in all six games to begin the season and stand as one of four teams who are yet to allow fewer than 20 in any game this season.

That bodes well for the 49ers, who are 2-0 at home this season and have allowed fewer than 10 points in both of those games, though they have never held their opponent to fewer than 10 points in the team's first three home games of any season.

The potential return of Nick Bosa will be of concern for Patrick Mahomes, after he missed last week due to a groin injury, as the 49ers are pressuring quarterbacks in 48.4 per cent of passing plays with Bosa on the field (122 plays) compared to 34.9 per cent without him (86 plays).

New York Jets (4-2) @ Denver Broncos (2-4)

The Denver Broncos are in need of a major improvement in performance and hosting the Jets will provide encouragement, having shut them out in two straight home games, including 26-0 last year.

The Jets have reason to be optimistic themselves, however, with last week's 27-10 victory against the Green Bay Packers securing their first three-game winning streak since 2019 and their first three-game road winning streak in a single season since 2010.

Meanwhile, the Broncos fell to a 19-16 overtime defeat to the Chargers in Week 6 and suffered their second straight overtime loss, with no team ever having played three straight overtime games in NFL history.

Russell Wilson found himself under scrutiny again last week, completing only 15 of his 28 pass attempts for a completion percentage of 53.6. In total this season, he has a 58.6 completion percentage, having entered the year with a lowest single-season completion percentage of 61.3 in 2017.

Elsewhere…

The Pittsburgh Steelers lost their first six road games as a franchise against the Miami Dolphins but head to Florida in Week 7 with a 6-3 record in the past nine meetings. However, they have not had a quarterback start at the Dolphins other than Ben Roethlisberger since Kordell Stewart in 1998.

Each of the last 11 games between the Seattle Seahawks and the Chargers have been decided by a single-digit margin, with the only longer streak in NFL history being a 14-game stretch between the Colts and Houston Texans from 2014 to 2020.

Aaron Rodgers stands 0-3 in road games against the Washington Commanders, with the Green Bay Packers 2-8 in their last 10 games in Washington – their victories coming in 1968 and 2004.

Tom Brady faces the Carolina Panthers with 15 completions in each of his last 39 games for the Tampa Bay Buccaneers, tying Brady's career-best streak with 39 straight games for the New England Patriots from 2011 to 2013.

Kawhi Leonard said he feels good physically after making his return from injury in the Los Angeles Clippers' victory over the Los Angeles Lakers.

Having missed the entirety of last season with an ACL injury suffered in the 2021 playoffs, Leonard came off the bench to play 21 minutes, scoring 14 points with seven rebounds in the Clippers' 103-97 triumph.

Leonard's return after a 16-month layoff provides a significant boost for the Clippers this season and the two-time NBA champion praised the atmosphere across the roster that helped to push him through his recovery.

"I feel good. We did an amazing job, the Clippers staff, putting together a team to get me out here quickly," he said on court after the game, "I just give it all to them, they match my motivation of getting back so that is all that you can ask for from them as a group."

Leonard added that the start off the bench was the best option, stating: "Like I told [coach Tyronn] Lue, whatever way with his subs and what he thinks how it should go without me affecting the game and causing people to get out of rhythm, I'm for it. I just want to win.

"Starting I would have been sitting like 35 minutes real time, so that's way too long, so I just felt that this was the best situation."

The Clippers boast an impressive amount of depth this year, with Leonard, Norman Powell, Luke Kennard, Robert Covington and Terence Mann all providing options at small forward, which Leonard says helps to balance responsibility across the team.

"It's amazing, we've seen it tonight, everyone is out there contributing on defense and on offense, as a leader, we've got to know who is on our team and that we don't have to do it every night," he added.

"We just have to show up in the big moments in the fourth quarter. We're just trying to all be stars in our roles and I think that is going to help us moving forward."

The Clippers will continue to be patient with Leonard, however, with the priority being that he is able to play at his best level come the spring, with head coach Tyronn Lue pressing caution.

"There's going to be some times when he looks like Kawhi Leonard and some times where he’s just trying to get a feel and not playing well," he explained.

"He has to understand that as great as he is, it's not going to come overnight. We've got to be patient with him in that regard and he has to be patient with himself as well."

Lewis Hamilton says the future of the budget cap in Formula One is dependent on the punishment that is dished out to Red Bull for their breach in 2021.

The FIA confirmed Red Bull had committed a "minor" breach of the $145million (£114m) cap last year and has submitted an "accepted breach agreement" to the team.

That proposal, which is confidential, outlines the penalty that the FIA will hand to Red Bull if they accept the cap, although they could fight the judgement and send the matter to an adjudication panel.

With 2021 having been the first season of the budget cap's implementation, there is uncertainty over what action the FIA will take and Hamilton believes the regulations will be pointless if no serious consequences result.

"If they are relaxed with these rules, all the teams will just go over," he told the BBC.

"Spending millions more and only having a slap on the wrist is not going to be great for the sport. They might as well not have a cost cap in the future."

New York Yankees manager Aaron Boone claims the roof being open at Minute Maid Park cost his side in Thursday's 3-2 loss to the Houston Astros in Game 2 of the ALCS.

Aaron Judge missed out marginally on a go-ahead home run when his right-field shot was caught on the fence by a leaping Kyle Tucker in the eighth inning.

Statcast showed that shot would have landed in the stands at Yankee Stadium, but Boone said the wind from the open air at Minute Maid Park hindered Judge's chances.

"I think the roof open kind of killed us," Boone later reporters. "I think it's a 390 [foot] ball. I think it was like 106 [exit velocity] or whatever.

"I think Judge is a homer all the time. The wind was blowing across like that. I didn't think like he smoked it like no-doubter, but it felt like his homers to right."

The Yankees only managed four hits for the game and had 13 batters strike out with the Astros victory giving them a 2-0 series lead.

Boone, who is under some pressure, remained bullish his side could get back into the ALCS ahead of three home games, as they bid to make the World Series for the first time since 2009.

"We've just got to go home and get one," he said. "It starts with that."

The Yankees, who lost 4-2 in Game 1 in Houston, have managed only nine hits across the two games, while having 30 batters struck out.

"Both these games we were in," Boone said. "We've just got to find a way to do a little bit more offensively.

"We feel we can go out there and limit them enough, a very good offense and give us a chance.

"Certainly feel there's no one better than Gerrit [Cole] to hand the ball to, to get us right back in this."

The Astros, who are aiming to reach the World Series for the fourth time in six seasons, have a 5-0 postseason record after sweeping the Seattle Mariners. Three of the Astros' postseason wins have been by one run, while the other two have been by two runs.

American teenager Coco Gauff showed why she deserves to be at this year's WTA Finals with a commanding 6-0 6-3 victory over Martina Trevisan at the Guadalajara Open.

The fifth seed clinched her maiden spot at the season-ending WTA Finals on Wednesday and backed that up by securing her third WTA 1000 quarter-final on Thursday.

Gauff reeled off the first nine games of the match against Trevisan, where she triumphed in one hour and one minute. The 18-year-old came under pressure from Trevisan, who generated nine break points for the match but Gauff saved all bar one of them.

World number one Iga Swiatek (47) is the only player to have won more matches this year in straight sets than Gauff (32).

Gauff will face Victoria Azarenka in the quarter-finals after the Belarusian toppled 13th seed Madison Keys 6-4 6-7 (4-7) 6-1 in two hours and 13 minutes.

Two-time Australian Open winner Azarenka swept aside Keys in 32 minutes in the third set after a titanic battle in the opening two frames, winning 26 of the 37 final-set points. Azarenka's quarter-final appearance is her 34th since 2009, with only four players having more during the span; Agnieszka Radwanska (42), Simona Halep (39) and Caroline Wozniacki (36).

Third seed Jessica Pegula advanced to the last eight with a 6-4 6-4 victory over former US Open champion Bianca Andreescu. 

The American, who survived three match points against Elena Rybakina on Wednesday, trailed early against the Canadian but took control of the match. Pegula will face Sloane Stephens in the quarter-finals after she toppled 2022 US Open semi-finalist Caroline Garcia 7-6 (8-6) 7-5.

On the day her WTA Finals berth was confirmed, seventh seed Daria Kasatkina lost 6-2 2-6 6-3 to Anna Kalinskaya in two hours and 14 minutes.

Fourth seed Maria Sakkari fought back to win 5-7 6-3 6-3 over 14th seed Danielle Collins, while Marie Bouzkova copped a bagel before triumphing 0-6 7-5 6-3 over Liudmila Samsonova.

Sakkari will next meet eighth seed Veronika Kudermetova who beat Jelena Ostapenko 6-4 6-4. Bouzkova will take on Kalinskaya in the last eight.

Kawhi Leonard scored 14 points with seven rebounds as he returned for the first time in 16 months in the Los Angeles Clippers' thrilling 103-97 victory over the Los Angeles Lakers on Thursday.

Leonard, who missed all of last season after sustaining an ACL injury in the 2021 playoffs, played 21 minutes off the bench, shooting six-of-12 from the field, including a crucial two-pointer with under two minutes left at Crypto.com Arena.

The Lakers had hit the lead in the last quarter after LeBron James' block on Paul George set up Lonnie Walker IV's jam, but the Clippers were clutch down the stretch to extend their winning streak over their rivals to eight games.

The Clippers' current eight-game winning run over the Lakers is the second-longest in franchise history, behind 11 from 2014 to 2016.

James, in his 20th season in the NBA, scored 20 points with 10 rebounds, six assists and two blocks, while Anthony Davis was exceptional with 25 points including two triples and eight rebounds.

But the three-point issues that plagued the Lakers last season reared their head again, going at 20 per cent from beyond the arc as a team. The Lakers' two-game three-point percentage of 22 per cent this season is the worst by any team through two games in NBA history (minimum 60 attempts).

Russell Westbrook was a major culprit, managing only two points in 27 minutes, shooting none-of-11 from the field and none-of-six from beyond the arc.

Giannis in top form as Bucks open with 76ers win  

The Philadelphia 76ers lost for the second straight game to open the season after James Harden missed a floater off the glass on their last offensive play in a 90-88 loss to the Milwaukee Bucks.

The 76ers were booed by their fans at Wells Fargo Center in the third quarter, before rallying with a 13-0 run in the fourth, led by Harden who had eight points during that span, finishing with 31 for the game, along with eight rebounds and nine rebounds.

But Harden, who went one-for-seven from three-point range, missed his late chance straight after Wesley Matthews' triple as the Bucks won their season opener.

Giannis Antetokounmpo was in MVP form, having 13 points, six rebounds, four assists and three blocks in the first half, finishing with 21 points, 13 rebounds and eight assists with three blocks. Joel Embiid was kept scoreless in the second half, to have only 15 points with 12 rebounds for the game.

The San Francisco 49ers have won the Christian McCaffrey sweepstakes, acquiring the All-Pro running back from the Carolina Panthers on Thursday for four draft picks, according to multiple reports.

Off to an ugly 1-5 start, the Panthers had been considering trading McCaffrey, and they found a partner in the 49ers. Carolina will receive picks in the second, third and fourth round in the 2023 draft, and a fifth-round selection in 2024.

The 26-year-old McCaffrey ranks fourth in the NFL with 670 scrimmage yards, amassing 393 on the ground and another 277 through the air.

He joins a 49ers team that lost starting running back Elijah Mitchell to a sprained MCL in the season opener and quarterback Trey Lance to a season-ending broken ankle the next week.

Despite the significant injuries, the 49ers are 3-3 and in a three-way tie for first place in the NFC West with the Seattle Seahawks and defending Super Bowl champion Los Angeles Rams.

The versatile McCaffrey gives quarterback Jimmy Garoppolo another weapon to an offense that features receivers Deebo Samuel and Brandon Aiyuk and tight end George Kittle.

The eighth overall pick of the 2017 draft, McCaffrey’s best season came in 2019, when he became the third player in NFL history to reach 1,000 yards rushing and receiving in the same season. He finished with 1,387 rushing yards and 1,005 receiving yards and 19 total touchdowns to tie for the league lead.

Injuries, however, limited him to just 10 total games in 2020 and ‘21, but he’s suited up for all six games this year.

McCaffrey becomes the second Carolina player traded to an NFC West team this week after the Arizona Cardinals acquired wide receiver Robbie Anderson on Monday.

The Arizona Cardinals snapped their two-game losing skid by capitalizing on three Andy Dalton interceptions in a 42-34 win over the New Orleans Saints on Thursday.

The Cardinals led 35-17 before the Saints scored two fourth-quarter TDs through Dalton passes, but the damage was done as Arizona improved to 3-4 at University of Phoenix Stadium.

Arizona QB Kyler Murray, who was seen shouting at head coach Kliff Kingsbury in the second quarter, completed 20 of 29 passes for 204 yards and one touchdown with no interceptions, along with 30 rushing yards. DeAndre Hopkins sparked his side, returning from suspension for the first time this season for 103 yards from 10 catches.

Cardinals running backs Eno Benjamin, who had 12 carries for 92 yards, and rookie Keaontay Ingram both scored TDs.

The story of the game was Saints QB Dalton, starting for the fourth straight game in Jameis Winston's absence due to a back injury. 

Dalton had thrown only one interception in his previous three starts, but gave away three, including two pick-sixes to Marco Wilson and Isaiah Simmons. He had 30-of-47 passing for 361 yards with four touchdowns, connecting with Juwan Johnson for two of them, but the three interceptions hurt.

The Saints had gone ahead early when Dalton found Rashid Shaheed with a 53-yard TD pass, but the Cardinals worked their way back with 25 second-quarter points. Ingram powered his way in for a TD, before Wilson swooped on Marquez Callaway's tip ball, followed by Simmons' interception return from the 40-yard line.

The game marked the Cardinals' first 40-plus-point game since January 1 2017, breaking the longest streak in the NFL of 87 games.