Carolina Panthers quarterback Sam Darnold is expected to miss four to six weeks after suffering a high left ankle sprain in Friday's preseason game against the Buffalo Bills, according to NFL.com.

Panthers coach Matt Rhule told reporters on Saturday that Darnold's injury is "significant", and the former first-round pick will undergo further testing to determine a timetable for a return.

"We're not sure we have the exact length," Ruhle said. "We've sent images to specialists to try to gauge it. But again, that does look like a significant injury that could take some time."

Darnold was carted off during the third quarter of Carolina's 21-0 win after landing awkwardly when hit by Buffalo defensive tackle C.J. Brewer.

The fifth-year QB was slated to be the primary backup to offseason addition Baker Mayfield, whom Ruhle declared the starter earlier in the week.

Ruhle acknowledged Darnold could begin the season on short-term injured reserve, which would keep him out for at least four games. 

With both Darnold and rookie Matt Corral out, P.J. Walker is expected to serve as the number two QB for the September 11 opener against Cleveland.

Corral, a third-round pick in this year's draft, sustained a season-ending Lisfranc injury in last week's game at New England. 

"We have two quarterbacks [and] normally we would go into the season with two," Ruhle said. "Sam, I think he will be back. It's just a matter of how many weeks it is."

Ruhle also said kicker Zane Gonzalez will be sidelined indefinitely with a groin injury that also took place in the third quarter of Friday's game.

"He's going to be seen by a specialist, and that will lead to any future decisions that have to be made," Ruhle said. "But it is a significant injury to his groin.

"He's a warrior. He'll find a way to battle back, and we'll find out exactly what the length of that is."

Gonzalez is coming off a strong 2021 season in which he converted 20 of 22 field goal attempts and 22 of 23 point-after tries. 

Serena and Venus Williams have accepted a wildcard entry to play the women's doubles at the US Open.

The two-time doubles winners at Flushing Meadows are likely to appear at the tournament for the final time in 2022, with Serena having already announced her intentions to soon retire from tennis.

Both sisters have entered the singles draw, with Serena facing Danka Kovinic in round one while Venus begins her campaign against Alison van Uytvanck.

The pair have not played a major doubles event together since the 2018 French Open, suffering defeat in the third round, and were last paired in New York in 2014, when they reached the quarter-finals.

However, the duo boast 14 major doubles titles and three Olympic gold medals together and are to be reunited again after the US Open announced the 14 wildcard pairs for the doubles events on Saturday.

Serena's involvement at the US Open begins on Monday, with Venus following on Tuesday, before the first round of the women's doubles is scheduled for Wednesday and Thursday.

Liudmila Samsonova headed off to the US Open with a second successive title in the bag after sweeping to victory on Saturday at the Tennis In The Land tournament in Cleveland, Ohio.

The Russian scorched to a 6-1 6-3 demolition of Belarusian Aliaksandra Sasnovich, extending her winning streak to 10 matches after winning the Citi Open earlier in August.

Samsonova rolled past the in-form Bernarda Pera for the loss of just three games in the Cleveland semi-finals, before imposing a similarly commanding display on the trophy match against seventh seed Sasnovich.

Just nine places in the world rankings separated the two finalists heading into the final, with Sasnovich at number 36 the higher-placed player, but she could not cope with an opponent who did not lose a set all week.

Indeed, Samsonova only dropped 18 games across five matches, the 23-year-old tying up a third career title on the WTA Tour. Sasnovich has now lost all four of her finals.

At Flushing Meadows, Samsonova begins her campaign against Czech world number 194 Sara Bejlek and could face last year's runner-up Leylah Fernandez in round two.

Both Samsonova and Sasnovich have to play as neutrals for now, being unable to perform under the flags of their home countries because of Russian and Belarusian involvement in the ongoing invasion of Ukraine.

Samsonova said of Saturday's win: "We made a special final. We were both without the flag, so it's special.

"I think it's important to spend a minute to say we are very good people."

Mercedes driver George Russell believes Max Verstappen will win Sunday's Belgian Grand Prix despite starting 15th on the grid, and doubts his own chances of a podium finish.

Defending Formula One drivers' champion Verstappen put in the fastest lap in qualifying on Saturday, but the Red Bull ace is among those who have been pushed to the back of the grid after being issued with penalties.

Verstappen, courtesy of his qualifying efforts, starts at the front of the queue of those handed engine penalties. Charles Leclerc, Esteban Ocon, Lando Norris and Zhou Guanyu line up behind him, with Mick Schumacher at the back after a gearbox penalty.

That gives Verstappen plenty to do if he is to extend his lead at the top of the championship in the first race after the mid-season break, but Russell is still expecting him to finish top of the pile.

"I think Max will probably still win the race. I don't know where he is going to be starting, but with the pace he has got he will probably still win the race," Russell said.

"And Charles [Leclerc] as well, he will probably still come through. So, I think it is unlikely that we will be on the podium tomorrow in all honesty, because we've still got Carlos [Sainz] and Checo [Perez] there and Max is going to slice through the field pretty quickly.

"We will need to look overnight, try and understand it. Qualifying is out of the way, which has been our weak point, and we'll try and be faster tomorrow."

While Verstappen is hopeful of a podium finish, his priority is to survive what is set to be a thrilling first lap at Spa with plenty of cars out of position, before eyeing a finish further up the field.

"I think with the pace we have in the car, I want to move forward, and I want to be at least on the podium," Verstappen said.

"I mean survive, of course, lap one – that's the most important. Then after that I need to pass a few cars before of course you get into a competitive position."

Ferrari's Carlos Sainz starts the race on pole ahead of Sergio Perez, with Fernando Alonso and Lewis Hamilton on the second row while Russell and Alex Albon complete the top six.

Carlos Sainz profited from Max Verstappen's grid penalty to secure pole for the Belgian Grand Prix but admitted to being concerned by the gap between Ferrari and Red Bull.

Verstappen topped the timesheet in Saturday's delayed qualifying session at Spa-Francorchamps ahead of the first race following the mid-season break.

But the reigning champion – who holds an 80-point lead over Charles Leclerc at the top of the standings – will start in 15th after being penalised for using too many engine parts.

The Dutchman is one of seven drivers taking grid penalties, along with Charles Leclerc, Lando Norris, Esteban Ocon, Zhou Guanyu, Mick Schumacher and Valtteri Bottas.

That effectively meant the rest of field were facing off for the top 13 positions on the grid, and it was Ferrari driver Sainz who will will start Sunday's race at the head of the pack.

Whereas Verstappen looked comfortable throughout and delivered a time of 1:43.665 seconds with his first Q3 flying lap, Sainz's Q3 lap was rather scrappy.

Despite claiming pole, the Spaniard – who is fifth in the standings – was not entirely pleased with how things played out.

"I'm happy to be starting on pole, but I'm obviously not so happy to see the gap to Max this weekend and the gap Red Bull have on us," he told Sky Sports.

"We need to keep digging to see why Red Bull are so fast around this track. But to start from pole is good and we will try to win tomorrow.

"I think our race pace is better than our qualifying pace, but there is still something to find."

The past seven winners of the Belgian Grand Prix have started from the front row of the grid, six of them from pole.

But after finishing 0.632s clear of the field in qualifying, Verstappen – last year's winner on this track – is hopeful of climbing from towards the back of the pack into the top three.

"It was an amazing qualifying but the whole weekend we have been really on it," he said. "With a car like this it would be a shame to not be on the podium.

"The car has been working really well and we have basically been trying to fine tune it and it all came together in Qualifying.

"Of course, I had to be careful with the amount of tyres I was using, but I was very happy with my lap. It is an amazing track with amazing fans and I hope they had a good day."

Verstappen is set to start one place ahead of title rival Leclerc, while team-mate Sergio Perez is second after finishing 0.165s behind Sainz.

Fernando Alonso, who is on his best run since 2018 after collecting points in each of his past eight races, is third ahead of Mercedes pair Lewis Hamilton and George Russell.

Red Bull are seeking a fifth win in Belgium – only in Mexico (six) would they have more – with Perez looking to overhaul Sainz.

"P2 is not the worst place to be around here and I think if I am able to get a good run at Carlos, it will be different and I will be on the other side of the row," Perez said.

"I am looking forward to tomorrow and I think there will be a great race ahead of us. It'll be very important to get a good start and do our own race and I think that will be the key."

Jay Vine landed a second stage win in three days at the Vuelta a Espana after a magnificent climb through mountain mist to the finish line.

The Australian made his decisive move on Saturday's stage eight with just under 6km remaining as crowds roared on his bravura move, with the Alpecin-Deceuninck rider leaving behind fellow breakaway riders.

Vine had a 25-second lead with 1.5km remaining as Spaniard Marc Soler just about stayed in touch, but the gap was 43 seconds in the end, the home challenge having faded.

The 153.4-kilometre Asturias mountain stage from Pola de Laviana contained a sting in the tail, a category one ascent to the Collau Fancuaya finish.

Having won an exacting stage from Bilbao to Pico Jano on Thursday for his first Grand Tour win, it was impressive that Vine was able to produce a repeat.

"It's incredible," said 26-year-old Vine on Eurosport. "I've got so much more confidence after that first one, I got the monkey off my back. It felt so much more natural riding in the group today and all the pressure was off me. Today was such a fun day."

He featured among a group that surged clear of the peloton and held a lead of over four minutes inside 60km, and although it later splintered Vine had plenty of company heading into the closing 10km.

His surge did the job, though, denying Soler what would have been a third Spanish victory in four days following Jesus Herrada's Friday win.

In the general classification picture, Remco Evenepoel stayed out in front, but Rudy Molard (Groupama-FDJ) slipped from second to 30th overall after a rough ride, allowing Enric Mas and Primoz Roglic to each nudge up a place to podium positions.

Vine vaults to KOM top spot

Vine's dominant ride saw him take over at the top of the King of the Mountains standings – the fourth Australian to achieve that feat after Simon Clarke, Nathan Haas and Michael Storer – following misfortune for previous leader Victor Langellotti.

Langellotti (Burgos-BH) crashed out early in the stage and was taken to hospital with a suspected fractured collarbone and concussion.

STAGE RESULT

1. Jay Vine (Alpecin-Deceuninck)
2. Marc Soler (UAE Team Emirates) +0:43
3. Rein Taaramae (Intermarche-Wanty-Gobert) 0:43
4. Thibaut Pinot (Groupama-FDJ) +0:47
5. Remco Evenepoel (Quick-Step Alpha Vinyl) +1:20

CLASSIFICATION STANDINGS

General Classification

1. Remco Evenepoel (Quick-Step Alpha Vinyl) 29:28:19
2. Enric Mas (Movistar) +0:28
3. Primoz Roglic (Jumbo-Visma) +1:01

Points Classification

1. Mads Pedersen (Trek-Segafredo) 147
2. Sam Bennett (Bora-Hansgrohe) 142
3. Marc Soler (UAE Team Emirates) 81

King of the Mountains

1. Jay Vine (Alpecin-Deceuninck) 40
2. Marc Soler (UAE Team Emirates) 16
3. Thibaut Pinot (Groupama-FDJ) 12

Ian Foster says New Zealand are "hurting" and on "a tough learning curve" after they were beaten at home by Argentina for the first time in Christchurch on Saturday.

The All Blacks had halted a three-match losing streak by beating South Africa at Ellis Park, but the Pumas consigned them to a historic 25-18 Rugby Championship defeat at Orangetheory Stadium.

Emiliano Boffelli booted 20 points and Juan Martin Gonzalez scored the Pumas' only try as they fought back to secure a stunning victory.

All Blacks head coach Foster was backed to keep his job through to the Rugby World Cup in France next year following the win over the world champions in Johannesburg, but this loss put him back in the spotlight.

Foster expressed his frustration over his side's inconsistency following a defeat that leaves them third in the table behind surprise leaders Argentina and Australia.

"[I am] Not losing patience, but certainly hurting." said Foster.

"It's hard work when the team is not, sort of, at 100 per cent every week. But I have been there when it is, and I know how much experience you need to get to that point and how much hard work and how settled the team needs to be.

"For us, as you can imagine, there is a shed full of people that are hurting right now. We are working hard and making some moves in our game.

"Things are hard work at the moment. I thought that at half-time, we had got some really good set-piece dominance. We kept them in the game with what I thought was some pretty average on the offside line.

"We gave them four penalties in that space in the second half."

The 57-year-old continued: "We ended up trying to over-play our hand, really, and got a little bit frustrated against them. Our set-piece didn't quite work the way we wanted in the latter part, and we probably forgot to play our kicking game.

"So, a tough learning curve for this group at the moment."

Alpine team principal Otmar Szafnauer is "confident" the ruling over Oscar Piastri's contract will fall in their favour with the dispute set to go before the Formula One contract recognition board (CRB).

Following Fernando Alonso's decision to leave Alpine, the team announced that reserve driver Piastri would replace the Spaniard for the 2023 season.

However, the Australian contradicted this claim when he released a statement on his social media platforms, stating that he would not be driving for Alpine the following year.

Piastri is understood to have committed to McLaren, who are not commenting publicly on the matter.

But speaking ahead of this weekend's Belgian Grand Prix, Szafnauer is adamant Alpine had all bases covered when securing his services.

"We will have the CRB decide which contract Oscar signed takes precedence and after that, we will see where we go," he said.

"There are certain things that need to be in the contract [to secure Piastri], and I am confident they are in there.

"Once we have all the information in front of us, we will start looking at who will fill the open seat."

However, Szafnauer did accept Alpine were hasty with their announcement, having raised eyebrows by doing so without a statement from Piastri.

"I told Oscar before the announcement was made," Szafnauer added. "He happened to be in the simulator, so I went and found him. He smiled and was thankful, so we made the release very quickly.

"Things happen very quickly. We too reacted quickly and didn't want to go back and forth with his management, which is why we put the release out."

There seems to be no escaping the number 23 for Serena Williams as she prepares for an emotional final grand slam at the US Open.

It is 23 years since the legendary American won her first major singles title at Flushing Meadows, where she was also crowned doubles champion back in 1999.

Williams has gone on to win an astonishing 23 grand slam singles titles and 14 major doubles titles in an incredible career that is about to come to an end in New York.

One of the all-time greats turns 42 next month and although she is unlikely to bow out by claiming an elusive 24th major singles title in her home major, she is sure to be given a spine-tingling farewell.

Novak Djokovic's absence due to not being vaccinated against COVID-19 has been the big talking point in the men's singles, with Rafael Nadal getting an opportunity to extend his record tally of major successes.

Stats Perform picks out the standout numbers to preview the final major of the year as Emma Raducanu and Daniil Medvedev prepare to defend their titles.

Serena's incredible longevity

Such is the remarkable longevity of Williams' career, defending champion Raducanu and world number one Iga Swiatek were not even born when she won her first major.

Wimbledon champion Elena Rybakina was only a few months old when the iconic Saginaw native beat Martina Hingis in the 1999 US Open final for the first of so many major titles.

Only Chris Evert can boast as many US Open titles as Williams' tally of six in the Open Era, while she has played in a record 10 finals at Flushing Meadows.

The retiring veteran has 106 victories in her home major, a record in the Open Era, and only Martina Navratilova has recorded more wins in a single major - with 120 at Wimbledon.

Williams will be making her 21st main-draw appearance at the US Open, with only her older sister, Venus, bettering that figure in the Open Era as she prepares for her 23rd.

Long-awaited New York return for Nadal 

Nadal has not played at Flushing Meadows since he was crowned champion for a fourth time three years ago, having missed the 2020 tournament amid the coronavirus pandemic and not played last year due to a foot injury.

The Spanish great's hopes of completing a first calendar Grand Slam were ended by an abdominal injury that resulted in his withdrawal from Wimbledon ahead of a scheduled semi-final against Nick Kyrgios.

He could make it three major titles out of four this year in New York, though, where he will be bidding to take his haul of grand slam titles to 23 and move two clear of the absent Djokovic once again.

If Nadal lifts the trophy on Arthur Ashe Stadium, it would give him a record-equalling fifth US Open men's singles title - matching the haul of Jimmy Connors, Pete Sampras and Roger Federer.

Only Bjorn Borg (89.2 per cent) has a higher winning ratio in grand slam tournaments during the Open Era than Nadal's 88.3 per cent among players with at least 100 victories to their name, 

Another record in women's singles?

Teenage Brit Raducanu made history when she became the first qualifier to win a major title last year, beating Leylah Fernandez in the final.

Swiatek has dominated the women's game for much of this year, the highlight being her second French Open triumph.

With the retired Ash Barty, Swiatek and Rybakina taking the singles titles in 2022, there could be four different gram slam champions for a fifth consecutive season - excluding 2020 - and that would be the longest such streak in the Open Era.

Alcaraz to make major breakthrough?

While Nadal will be the Spaniard with the largest burden of expectation on his shoulders, Carlos Alcaraz should be a big threat in New York.

The 19-year-old could become the fifth player in the Open Era to reach at least the quarter-finals in his first two appearances at Flushing Meadows after Ken Rosewall, Arthur Ashe, John Newcombe and Johan Kriek.

Alcaraz has the joint-most ATP Tour titles this year with four, matching Nadal's tally.

At the age of 16, Serena Williams had a fairly confident grip on how the world saw her, and her older sister Venus.

"A lot of people think that black people can't rally, just think they're athletes and they can't think," Williams said at the 1998 Lipton Championships. "As you can see, that's not true. I can rally, Venus can rally."

And my word, how they could rally. As teenagers, then into their roaring twenties, onward into their thrilling thirties and even after turning 40.

Serena turns 41 next month and will retire after the US Open. She has been a title winner on tour in the 1990s, 2000s, 2010s and 2020s, a beacon to black youngsters with a dream everywhere.

It was a March day in Key Biscayne, Florida, when the teenage Serena floated her belief that racism was already circling the siblings.

She had just lost a deciding-set tie-break to WTA number one Martina Hingis in the quarter-finals of the Florida tournament, missing out on two match points. It was one of those occasions where Williams conceded she "could have rallied a little better".

The 40th-ranked youngster said she would "go home and work on that", and brushed off the missed match points by pointing out Pete Sampras had lost to Wayne Ferreira from the same position.

"Maybe I'm just like Pete. Maybe one day I'll be number one, too," Williams said, presciently.

Eighteen months later, she was the US Open champion, beating Hingis in the title match at Flushing Meadows. Bill Clinton, President of the United States, called after the match ended to offer his congratulations.

In that instant, the 17-year-old Serena said it felt "really amazing", but a day later her mood had darkened. Tennis life and fame was already proving wearing. Dad Richard had groomed the sisters for this life, but Serena, who had to give up her skateboarding hobby because of a wrist injury, realised she had left normal life behind.

"I mean, it's actually impossible for me to go out now," she said. "I can't go anywhere. From the beginning of the tournament, I just can't walk down the street.

"It's the same [at home]. You're driving, people honk their horns. It's actually kind of annoying."

Serena and Venus put up with garbage for many years. Whether it was horns honking, or critics honking, they were frequently served a raw deal.

At Wimbledon in 2000, it was tossed to Serena that "critics" were suggesting she and her sister might not be "as strategically aware as some of the other players", but that they were "incredible athletes with great bodies".

"We definitely have great bodies, yeah. Nice, slim, sexy shapes. They're right," Serena replied, unimpressed.

Later that year, after her US Open defence ended with a quarter-final loss to Lindsay Davenport, Williams discussed opposition to the prospect of sisterly dominance.

"I'm sure a lot of people never want to see an all-Williams final," said Serena. "It's going to happen in the future inevitably. Nobody's going to be able to stop it. Obviously, no one would want to see an all-Williams final because everyone doesn't really like us. That's just the way it is."

Those are depressing words to revisit, and they came as Davenport claimed Hingis had been urging her to beat Serena. Venus went on to beat Davenport in the final.

Yet, as Serena forecast, nobody could stop the sisters' march. Serena and Venus first matched up in a slam final in New York at the 2001 US Open, and Venus got the better of Serena.

They clashed again in five of six slam singles finals from the 2002 French Open through to Wimbledon in 2003, and Serena won every time. Across the next five years, she won a modest – by her astonishing standards – three further slams, but Williams was back at the height of her powers when she won both the Australian Open and Wimbledon in 2009 and 2010.

A near-disastrous accident said to have happened in a Munich restaurant, with Williams standing on some glass, followed just days after Wimbledon, and she did not play another slam until returning to London the following year.

It was there that Williams was handed a Court Two assignment for her second-round clash with a fledgling Simona Halep. I remember being on court that day, puzzled why this sporting colossus was sent out to a court that is seriously modest when matched up to Centre Court and Court One.

"They like to put us on Court Two, me and Venus, for whatever reason," Williams said afterwards. "I haven't figured it out yet. Maybe one day we'll figure it out."

It was put to Serena that the sisters might take it as an insult, given Novak Djokovic and Rafael Nadal tended not to be sent out to Court Two, an awkward spot in the grounds for superstars to reach without causing a fuss.

"Yeah, they're never moved across," said Serena. "I don't make it a big issue. I think at some point maybe I should."

She streaked together three US Open titles from 2012 to 2014, and further Wimbledon triumphs in 2012, 2015 and 2016. It seemed a matter of time before Williams went past Margaret Court's record 24 singles slams, removing any question mark over who is the greatest women's player of all time.

Slam number 23 arrived in Australia while Williams was in the early stage of pregnancy in 2017, and the birth of daughter Olympia was followed by another harrowing health scare.

Williams still reached four more slam finals, going all the way to the title matches at Wimbledon and the US Open in 2018 and 2019, but she could not land the elusive 24th. In fact, she did not win a set in any of those finals.

Defeat to Bianca Andreescu in the 2019 Flushing Meadows title match was hard to take, Williams acknowledged afterwards.

"I honestly don't think Serena showed up," said Williams. "I have to kind of figure out how to get her to show up in grand slam finals."

That was to be her last slam final, barring something most unexpected happening over the coming fortnight.

Serena saw room for improvement, but she 'showed up' more than often enough on the big stage.

She fought racists, sexists, ignoramuses and charlatans to get a foothold on tour, then made a mockery of the "black people can't rally" jibe.

Her 23 singles slams ranks as a record for the sport's Open Era. She has 365 grand slam match wins in singles, 59 more than second-placed Martina Navratilova.

It's one for every day of the year so far, but this great American will want more before that final farewell.

She announced her retirement in Vogue, a power move, just like having the likes of Beyonce, Jay-Z and Meghan Markle in her corner always was.

The pursuit of Court is up; just about, anyway. It probably helps that the likes of Billie Jean King and John McEnroe hold up Williams as the greatest of all time.

After her magazine piece, Williams spoke in Toronto about seeing "a light at the end of the tunnel".

"I can't wait to get to that light," Williams said, being serious but laughing hard.

What does it represent?

"Freedom," said Williams.

Rafael Nadal described Novak Djokovic's absence from the US Open as "very sad" after the Serbian revealed he would not compete at Flushing Meadows.

Djokovic announced he would not be making the trip to New York on Thursday, due to visitors to the United States being required to display proof of vaccination against COVID-19.

The US Open will represent the second grand slam Djokovic has missed this year, after his unvaccinated status saw him deported from Melbourne ahead of the Australian Open in January.

Nadal is one of the most likely players to benefit from Djokovic's absence as he bids to win a 23rd grand slam title, but the Spaniard expressed sympathy for his rival as he prepared to begin his US Open campaign against Rinky Hijikata next week.

"From my personal perspective, it's very sad news," Nadal said. "It's always a shame when the best players in the world are not able to play a tournament because of injuries or because of different reasons.

"It's tough for the fans, tough for the tournament. In my opinion, tough for the players, too, because we want to have the best field possible."

Nadal's clash with Hijikata will represent his first outing at Flushing Meadows since he beat Daniil Medvedev to win the 2019 title, and injuries have caused him to miss four of the last 10 editions of the tournament.

Roger Federer, another of Nadal's great rivals, will also miss the competition after undergoing three knee operations in two years, but the Spaniard believes the major championships can cope with the absences of tennis' aging stars.

"The world of tennis [will] keep going, even if it is not good news for everyone," he added. "The world continues and the tennis will continue after me, after Novak, after Roger.

"Without a doubt, Novak is one of the most important players of the last 20 years, [in] the history of our sport. In a personal way, I feel sorry for him that he's not able to travel here."

Meanwhile, Federer is hoping to return to the court for September's Laver Cup, where he will join Nadal and Djokovic in a star-studded Team Europe line-up, and the Swiss maestro's old foe is desperate to see him make his long-awaited comeback.

"I'm super excited to see Roger again on court, of course," Nadal said. "I hope he's healthy enough to make that happen.

"It has been a long period of time without Roger on court so I really hope that he can manage to be back.

"The most important thing at this stage of his career is the health and the happiness, no? If he's healthy enough and happy enough to be back on the tennis tour, it will be amazing. 

"If not, we can say thanks to him for everything that he achieved. I am confident that we will keep having Roger for a while."

Argentina claimed their first away victory over New Zealand as an outstanding defensive performance saw them seal a 25-18 win in the Rugby Championship.

The Pumas were consistently under intense pressure in Christchurch but they overturned a 15-12 half-time deficit through the boot of Emiliano Boffelli and a superb rearguard effort saw them cling on.

It is a result that will only intensify the scrutiny on All Blacks coach Ian Foster, whose side have followed a home Test series defeat to Ireland with losses to South Africa and Argentina in their first three games of this competition.

Argentina, by contrast, are an in the unfamiliar position of sitting top of the Rugby Championship table, this famous win following a thrashing of Australia at home two weeks ago.

The prospect of Argentina pulling off such a shock looked unlikely in a first half in which New Zealand crossed for two tries.

Samisoni Taukei'aho went over after a lineout drive, a try that came either side of two penalties from Boffelli.

Richie Mo'unga then converted a three-pointer of his own before Caleb Clarke raced over after Argentina went long at a lineout and Rieko Ioane and Jordie Barrett combined to set up the wing down the left.

But another pair of Boffelli penalties kept Argentina within striking distance at half-time and they tightened their defence after the break.

A Mo'unga kick stretched the New Zealand lead to six but the All Blacks never added to their tally thereafter.

The restart following the Mo'unga penalty saw Argentina steal the ball, allowing Juan Martin Gonzalez to steam over for the Pumas' sole try.

Boffelli converted and maintained his accuracy from the tee to convert another two penalties, leaving New Zealand - who saw Shannon Frizell sin-binned nine minutes from time - needing a converted try just to snatch a draw.

They were not up to the task despite dominating possession and territory, their last opportunity coming and going as they failed to keep a lineout straight deep into Argentina territory, giving the visitors the chance to boot the ball into touch after the subsequent scrum and spark jubilant celebrations.

Australia got back on track in the Rugby Championship by recording a deserved 25-17 win against South Africa in Adelaide, responding to their humiliating defeat to Argentina in emphatic fashion. 

Dave Rennie's men appeared keen to atone for their 48-17 hammering against the Pumas from the outset on Saturday, with Fraser McReight going over to put them in charge almost straight from the kick-off.

A further McReight try, as well as a fine effort from Marika Koroibete, handed the Wallabies an unassailable lead after the break, though South Africa restored some pride with two late scores from Kwagga Smith.

But the final score ultimately failed to reflect Australia's superiority as they inflicted back-to-back defeats on the out-of-shape visitors.

The Wallabies made a flying start and hit the front less than two minutes in; McReight going over following good work from Saia Fainga'a and Nic White after the hosts won possession in South Africa's 22.

Having opened his account with the subsequent conversion, Noah Lolesio successfully kicked a penalty just five minutes later as the hosts established a 10-point lead.

Handre Pollard reduced the arrears 24 minutes in with a penalty of his own as South Africa finally responded, but that was the sum of their first-half efforts as the Springboks spurned several opportunities to cut the hosts' advantage. 

The visitors were made to pay for their wastefulness eight minutes after the break, as Koroibete darted between two challenges to convert after the ball was worked out to the left by White.

Australia then added some gloss to the scoreline as James Slipper found Lolesio in space from a fine set-piece move, allowing the number 10 to hand over to McReight to ease to his second try of the match.

The visitors were at least able to salvage some pride – and deny their opponents a bonus point – when Smith took advantage of a defensive mix-up to cross unopposed with five minutes remaining, before doubling up on the final whistle. 

But even that late flurry could not prevent South Africa making it eight Tests without a win on the road against Australia (D1 L7), as Rennie's side moved on to nine points at the top of the Championship standings.

McReight at the double for rampant Wallabies

With the home crowd expecting a response following Australia's dismal loss in Argentina last time out, McReight settled the nerves by going over after just 62 seconds.

He then capped a brilliant move in the 57th minute to hand the Wallabies what proved to be an unassailable lead.

World champions' woes continue

There was to be no resounding reaction from the Springboks, however, who were well beaten by New Zealand last time out and looked well off the pace for much of this contest.

They are still without a win over the Wallabies in Australia since September 2013, when they enjoyed a comprehensive victory in Brisbane.