Pep Guardiola believes Lionel Messi is undoubtedly the greatest player of all time, describing arguments in favour of Pele or Diego Maradona as "sentimental".

Messi has long been considered among the best ever, but both he and Cristiano Ronaldo trailed Pele and Maradona in the eyes of some while neither had won the World Cup.

That changed on Sunday, when Messi led Argentina to glory at Qatar 2022, matching Maradona's achievement from 1986.

However, in the eyes of Manchester City manager Guardiola, who coached Messi at Barcelona, there was never any doubt.

"Everyone has their opinion, but nobody can doubt he's there with the greatest of all time," Guardiola said. "For me, I've said many times: he's the best.

"It's difficult to understand how a player can complete what he's done in the past 50 or 70 years.

"The people who saw Pele or [Alfredo] Di Stefano or Maradona, the people can say 'my favourite', but these opinions are sentimental.

"On the other side, if he wouldn't have won the World Cup, the opinion about what he has done for the whole of football and my opinion of how he is as a player wouldn't change absolutely anything.

"But it's normal that it depends if you win [how] you are evaluated. Of course, for him, it's the final cherries on his incredible career."

Messi was joined in the Argentina side by City striker Julian Alvarez and Nicolas Otamendi, who spent five years at the Etihad Stadium between 2015 and 2020.

"We are incredibly happy for him [Alvarez] – congratulations," Guardiola added. "For him, for Nico Otamendi, personally for Messi, for Argentina the country, for a well-deserved champion.

"For Julian, he is with us, and we are delighted. He played a lot, and his contribution was amazing to the team for the way we played. We have a world champion in our team."

Guardiola confirmed Alvarez would now enjoy "a break", but City's other World Cup stars have started to return ahead of Thursday's EFL Cup fourth-round tie against holders Liverpool.

"The players that were at the World Cup are in a better condition than the players who were here, that's for sure," Guardiola explained.

"Sergio [Gomez], Erling [Haaland], Riyad [Mahrez], Cole [Palmer]... the rhythm they miss a little bit compared, for example, to Manu Akanji and Rodri and Aymeric [Laporte] and Nathan [Ake].

"They came back and we saw them so good, perfectly. That's normal. They compete, they train every day, while we had holidays."

France have been dealt another injury blow as Karim Benzema is out of the World Cup.

Benzema will become the first reigning Ballon d'Or winner to miss a world finals since Allan Simonsen's Denmark failed to qualify for the 1978 tournament.

The 'holders' curse' is now well established – Benzema had been hoping to help France end a sequence of three consecutive defending champions exiting in the first round – but Ballon d'Or victors have been no more fortunate.

In fact, stars entering a World Cup recognised as the world's best player have never gone home with the trophy.

While Alfredo Di Stefano's Spain, like Simonsen's Denmark, did not qualify in 1958, Benzema is the first player to be absent through injury.

But plenty of all-time greats have suffered World Cup heartache at their peak...

Eusebio (1966)

Eusebio lived up to his billing of being the best player in the world at the time by finishing as top scorer in the 1966 World Cup with nine goals. Thanks to the form of their star man, Portugal made quite the impact in their maiden tournament as they eliminated Brazil, who were without the injured Pele, but his penalty against England was not enough as the Selecao suffered semi-final heartbreak. The photo of a crestfallen Eusebio being led off the Wembley pitch remains iconic to this day, with the game being dubbed 'Jogo das Lagrimas' – the Game of Tears.

Roberto Baggio (1994)

After initially struggling to get going at USA 94 in an underwhelming group stage for Italy, Baggio finally came to life and showed why he was the world's best in the knockout rounds. The Juventus star scored late on against Nigeria to take the game to extra time and then netted the winning goal in the additional period to set up a quarter-final with Spain, against whom he also bagged the winner. That hot streak continued with two more goals against Bulgaria in the semis, yet the tournament would ultimately end in heartbreak as he skied the decisive penalty for the Azzurri against Brazil – a miss that he has had to relive over and over since that day.

Ronaldo (1998)

Entering the World Cup as a true global superstar O Fenomeno – The Phenomenon – dealt with the intense pressure by scoring three times in Brazil's run to another final, where hosts France awaited at the Parc des Princes. The showpiece is arguably best remembered more than two decades on for events prior to the match, with Ronaldo being left out of the starting line-up only to be reinstated 45 minutes before kick-off. The tale has been told countless times, though Ronaldo himself confirmed he was left out of the initial XI due to suffering a convulsion. While he won his battle to start, he could not make the impact he would have wanted as France ran out 3-0 winners in Saint-Denis.

Cristiano Ronaldo (2014 & 2018)

On the back of winning his second Champions League trophy, and the first of four with Real Madrid, Ronaldo looked in the mood to fire Portugal to a first World Cup crown. However, to say the tournament did not quite go Ronaldo and Portugal's way would be a huge understatement. The Selecao lost 4-0 to eventual competition winners Germany in their opening match and then required a 95th-minute goal to salvage a 2-2 draw against the United States. A 2-1 win over Ghana in their final match, with Ronaldo at least getting off the mark in that game, failed to prevent Portugal from crashing out in the group stage. Portugal, European champions at the time, only fared marginally better four years later with the world's best player in their ranks as they fell to Uruguay in the first knockout round.

Lionel Messi has found an unlikely ally in Real Madrid striker Karim Benzema, who believes those criticising the Argentinian's form at Paris Saint-Germain know nothing about football.

Messi joined PSG on a shock free transfer from Barcelona in August after the Blaugrana came to the realisation they simply could not afford to pay his wages in line with their reduced salary cap.

The move was seen as another big step for PSG in their quest to finally win the Champions League, as he was joining a team that already boasted Neymar and Kylian Mbappe in attack.

But Messi is yet to truly take off in Paris. While his haul of five goals in as many Champions League games is a good return, in Ligue 1 it has been a different story, netting just once in 11 appearances.

Unless he has an incredible second half to the season, Messi will fall well short of the 38 goals he scored across all competitions for Barca last term.

As for his creativity, Messi ranks third in the PSG squad for chances created (32) and his assists total of four is rather less than many would expect of him, particularly when Mbappe has 12 to his name.

But there have been extenuating circumstances given he did not have much of a pre-season, he has suffered with injuries and illness, and he is settling into new surroundings for the first time in his senior career.

As such, Benzema feels criticism of Messi – who could make his first appearance of 2022 on Sunday after a bout of coronavirus – is unfair.

Asked if Messi will be a success at PSG, Benzema told TF1: "How won't he succeed?

"It is just a period of adaptation, because he is not scoring a lot of goals. But watch what he does on the pitch.

"In any case you can't criticise a player like that. In fact, he who criticises Messi, knows nothing about football."

Messi claimed his record-extending seventh Ballon d'Or last year, an award that many had tipped Benzema to win over the course of the year.

Ultimately the Frenchman finished fourth in the running, also behind Robert Lewandowski and Jorginho, which was seemingly a source of frustration for him.

Winning the prize remains a goal of Benzema's, though he does not think he could have done any more than he did over 2021.

"Fourth, third or second is the same as 30th," he said. "The main thing is to win it.

"I was told that I hadn't won enough trophies, but I couldn't do more. It remains a goal and each season I will try to do better than what I did last season."

Everything points to the 34-year-old being in contention again at the end of 2022 as he sits atop LaLiga's goalscoring chart with 17, five more than anyone else in the division.

That haul has helped him to 303 goals for Madrid, which leaves Benzema just five behind club great Alfredo Di Stefano in third, while Raul (323) is not much further ahead in second – Cristiano Ronaldo (450) is way out in front.

Benzema never expected to get anywhere near Di Stefano's haul, which makes the achievement even more satisfying.

"It's a source of pride but I want to continue," Benzema added. "When I arrived, I saw [Di Stefano's record] so far away.

"I did not see these records as an objective, but today to be close to these legends is exceptional.

"When we arrive at Madrid, we don't tell ourselves that we will stay 10 or 15 years, we just want to win titles."