Carlos Alcaraz and Jannik Sinner can join Novak Djokovic as members of a new 'Big Three' in men's tennis over the coming years, before taking up the Serbian's mantle when he retires.

That is the view of four-time grand slam semi-finalist Tommy Haas, who believes Sinner's sheer power will help him build on the Australian Open title he captured last month.

Sinner recovered from two sets down to beat Daniil Medvedev in a thrilling Australian Open final in January, claiming his first grand slam title at the age of 22.

The Italian's triumph made him the third-youngest man to win the event since it moved to Melbourne Park in 1988, older only than Djokovic in 2008 and Jim Courrier in 1992.

That breakout victory led to suggestions that Sinner could join Alcaraz in becoming a regular challenger to Djokovic, who has largely dominated men's tennis in recent years, with Roger Federer retiring in 2022 and Rafael Nadal beset by injury problems.  

While Haas believes Alcaraz is currently a more rounded player than Sinner, he feels the Italian has every chance of adding to his first major crown in the coming years.

"Maybe with Al, it's a bit more of an all-round game, but I think Sinner is going to continue to work on his," Haas told Stats Perform. 

"He's already done a great job on movement, on defence. Maybe he doesn't actually need to learn to get to the net and finish more, but I'm sure he's going to try because of his powerful groundstrokes.

"If he keeps playing like he does, it's just so powerful. You're going to be reacting pretty much all the time against him.

"He's going to try to improve his serve, he's going to try to improve physically. If he stays healthy, if Alcaraz stays healthy, these two are going to be the ones playing for a lot of the big titles."

However, Haas also thinks there are other contenders capable of pushing for major honours, adding: "Then you have Holger Rune, you have these other young players coming up.

"He now has to step it up a little bit. I think there's been lots going on with his team, with lots of chefs in the kitchen, but he's got the right mindset, he's got the will, he's got the potential.

"You have [Alexander] Zverev, who obviously still believes he can and should win a slam, so there's a lot of nice contrast there. 

"Medvedev, on hardcourts you can never count him out, and he's only 27. I think there is still potential for those guys to keep doing well.

"[Andrey] Rublev, I feel like he's getting better on defence as well. He pounds the ball like no other. So if he gets a little bit tougher mentally, don't count him out. There's a lot of good storylines there."

Rafael Nadal will be contemplating the best way to call time on his stellar career after injury denied him the chance to defend his French Open title, believes Tommy Haas.

Nadal has not played since suffering a second-round exit at the Australian Open in January, having struggled with a hip injury during his straight-sets defeat to Mackenzie McDonald.

The 22-time grand slam champion last week admitted defeat in his bid to appear at Roland Garros, where he has triumphed 14 times – a record for any player at a single grand slam.

When announcing his withdrawal, Nadal said 2024 would "probably" be his final year on the ATP tour and outlined his intention of making farewell appearances at "important tournaments".

Nadal's long-time rival Roger Federer retired surrounded by several of his fellow greats at last year's Laver Cup, and Haas believes the Spaniard will be eyeing a similar send-off. 

"At some point, time catches up with all of us and that's the reality," Haas, a four-time grand slam semi-finalist, told Stats Perform.

"I think at this stage, I'm sure he's been contemplating the idea: 'When would I do it? How would I do it? How would it come together organically?' 

"We saw Roger Federer doing it last year and the way he was able to retire in London at the Laver Cup with all of his rivals and friends on the court. I happened to be there live, it was an amazing way to finish such an incredible career. 

"Look at Pete Sampras. He won his first slam at the US Open and he won his last match at the US Open, winning the slam there on home turf – there couldn't have been a better fairy tale. 

"I think you look at that and at the same time, you have to stay focused on what's happening today and you can't look too far ahead."

Though Nadal's total of 22 grand slam singles titles is a joint record in the men's game (alongside Novak Djokovic), the Spaniard's injury record has denied him several chances to add to that tally.

Nadal played all four grand slams for the first time since 2019 last year but was forced to withdraw from the Wimbledon semi-finals, and Haas says the Spaniard's fitness will dictate his future.   

"It always depends, obviously, on the injuries. 'How bad is it and can I recover from it?' I'm sure Rafa is constantly thinking about those situations," Haas added.

"He's been saying he still wants to play for another year or two, which would obviously be amazing for the sport. 

"On clay, I think he has a better chance of keeping the body in a better shape than on gruelling hardcourts. He obviously plays long matches, which is tough on the body."

The main draw of the French Open begins on Sunday, with Nadal's compatriot Carlos Alcaraz the top male seed as he bids for a second major title.

Tommy Haas says Carlos Alcaraz is already primed to succeed Novak Djokovic and Rafael Nadal at the very top of tennis.

Alcaraz became the youngest men's world number one when he won his maiden grand slam title at the US Open last year.

The Spaniard missed this year's Australian Open due to an injury, allowing Djokovic to reclaim his place at the summit of the rankings with his 10th triumph in Melbourne.

Djokovic celebrated a record-breaking 378th week at number one on Monday, the day after Alcaraz had fallen short against Cameron Norrie in the Rio Open final.

Alcaraz, who has already won seven singles titles, battled through pain in Brazil but ultimately slipped to a 5-7 6-4 7-5 defeat against the opponent he beat in the Argentina Open final a week earlier.

With the 19-year-old having already reached 10 tour-level finals, though, former world number two Haas has no doubt Alcaraz is in line to enjoy success close to that of Djokovic and Nadal.

"Yes, you have to say that he already is [ready]," Haas told Stats Perform.

"He had an unbelievable year last year, right. I think he won a title down there in Rio, on clay then he came to Indian Wells playing extremely good tennis, losing a tough battle match against Rafa in the quarters.

"They played some incredible tennis and you could just tell the way he moves on the court, his mental toughness and the shot selection that he has, the repertoire there is, there's nothing really missing.

"Being that young sometimes can be like the only hindrance in my mind because maybe you want it too much, or you overthink things. Or maybe in this case, you clearly don't overthink things, and you just go out and play your best and fight and give it everything you have.

"A lot of respect obviously goes to his team, his family, his coach. He just kind of went on that run, winning [in] Madrid, in his home country. And then winning his first slam, the US Open and being the youngest world number one, so what a quick rise. Just unreal, I can't even imagine how his life has been turned upside down in many ways."

The only concern, as far as Haas sees it, is Alcaraz's injury worries.

"He's a guy that wants to stick around, and remain up there at the top for a very, very long time," Haas added.

"With his game, and his potential, if he stays healthy... that's the thing, he's been already a little bit injured at a young age. So, that's a little bit of a warning sign.

"If he can remain healthy, I think that's where the team is obviously very smart. I think they're trying to build up his body still, to sustain the crazy amount of travel and the stress on the body that tennis creates on you to make sure that he has a long career, because that's what everybody hopes and dreams for."