Carlos Alcaraz continues his quest for further career glory at the US Open, having won his opening match against Reilly Opelka.

Martina Navratilova thinks Alcaraz will win the US Open, a trophy he lifted in 2022 for his maiden Grand Slam success.

The Spanish star now boasts five Grand Slam titles, although he did suffer his first Grand Slam final defeat to Jannik Sinner earlier this year.

Alcaraz was seeking a third successive Wimbledon victory, but was beaten to the trophy at the All England Club by the ATP number one.

Their focus has since switched to the US Open, which Alcaraz entered on the back of a Cincinnati Open final win over the Italian.

Carlos Alcaraz of Spain poses with the trophy after the Men's Singles Final match against Jannik Sinner of Italy on day twelve of the Cincinnati Open 2025 at Lindner Family Tennis Center.Photo by Daniel Kopatsch/Getty ImagesJohn McEnroe says if he thinks Carlos Alcaraz is better than Roger Federer and Rafael Nadal

The star duo, who have combined to win each of the last seven Grand Slam titles, have now been discussed by brothers Patrick and John McEnroe.

Ranking who he thinks is currently better, Patrick said on ESPN: “ I give Sinner the slight edge at the moment although when you look at just the head-to-head it favours Alcaraz very significantly.

“But this year you have got to look at the fact Sinner has won two of the three majors. He wins Wimbledon for the first time and overall he is more consistent.

“I think this loss here at Wimbledon is going to give Alcaraz a little bit more of an edge. He looked for him like a little passive in that match.

“He couldn’t believe that Sinner was just taking it to him. I think he is going to come here to New York thinking ‘okay, now I have got something to prove’.

“So I give Sinner the slight edge but I think Alcaraz is right there and he has a little bit of a chip on his shoulder.”

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Offering his verdict, John commented: “You want two great players in any sport to play their best. In my opinion if both guys play their best, Carlos Alcaraz is the better all around player.

“If he brings A- or below, Sinner is going to beat him. That is what it boils down to. This guy Carlos Alcaraz at 21 or 22 is the most talented kid I have ever seen on the tennis court.

“That is more than Roger Federer, [Rafael] Nadal and [Novak] Djokovic who I have great respect for. I idolised Rod Laver, I played Pete Sampras, this guy is astoundingly good when he is on.

“One of the quickest guys who has ever been on the court, incredible personality, the attitude is amazing. He has got every shot in the book. Everything.”

Carlos Alcaraz vs Jannik Sinner head-to-head record as US Open title bids start

Sinner has indeed won the Australian Open and Wimbledon in 2025, with Alcaraz winning the French Open in between.

And while it is the Italian who is number one in the ATP rankings ahead of the Spaniard in second, it is Alcaraz who currently has the head-to-head bragging rights.

The duo have met 14 times in their phenomenal careers so far, with Alcaraz winning nine and Sinner winning five.

Having landed on opposite sides of the US Open draw, another encounter is on the cards at Flushing Meadows.

Year Winner Tournament Round Surface 2025 Carlos Alcaraz ATP Masters 1000 Cincinnati Final Outdoor hard 2025 Jannik Sinner Wimbledon Final Outdoor grass 2025 Carlos Alcaraz French Open Final Outdoor Clay 2025 Carlos Alcaraz ATP Masters 1000 Rome Final Outdoor Clay 2024 Carlos Alcaraz Beijing Final Outdoor Hard 2024 Carlos Alcaraz Roland Garros Semi-final Outdoor Clay 2024 Carlos Alcaraz ATP Masters 1000 Indian Wells Semi-final Outdoor Hard 2023 Jannik Sinner Beijing Semi-final Outdoor Hard 2023 Jannik Sinner ATP Masters 1000 Miami Semi-final Outdoor Hard 2023 Carlos Alcaraz ATP Masters 1000 Indian Wells Semi-final Outdoor Hard 2022 Carlos Alcaraz US Open Quarter-final Outdoor Hard 2022 Jannik Sinner Umag Final Outdoor Clay 2022 Jannik Sinner Wimbledon Round of 16 Outdoor Grass 2021 Carlos Alcaraz ATP Masters 1000 Paris Round of 32 Indoor Hard

Carlos Alcaraz vs Jannik Sinner head-to-head

First up, however, Sinner takes on Alexei Popyrin in the second round, while Alcaraz meets Mattia Bellucci.

It comes after the Italian knocked out Vit Kopriva in his opener as the Spaniard beat Reilly Opelka, both in straight sets.