Alcaraz, Sinner feats among ATP No. 1 Club highlights of 2025
To mark the end of another thrilling season, ATPTour.com is unveiling our annual ‘Best Of’ series, which will reflect on the most intriguing rivalries, matches, comebacks, upsets and more. Today we highlight some key ATP No. 1 Club moments from the 2025 season.
The story of the ATP No. 1 Club in 2025 revolved around just two men: Carlos Alcaraz and Jannik Sinner.
The great Lexus ATP Head2Head rivals played out a riveting battle for ATP Year-End No. 1 presented by PIF honours across the season, and in doing so they continued to enrich the history of one of sport’s most exclusive groups. ATPTour.com breaks down the 2025 storyline surrounding Alcaraz and Sinner, the ATP No. 1 Club’s two newest members.
Introducing The ATP No. 1 Club:
Sinner Hits 52 Weeks In Debut No. 1 Stint
Even within the prestigious ATP No. 1 Club, Sinner became part of an even more exclusive group on 2 June. On the middle Monday of Roland Garros, the Italian began his 52nd week consecutive week atop the PIF ATP Rankings, becoming just the fifth No. 1 to register a full year in their debut stint in top spot.
Sinner joined Roger Federer (237 weeks), Jimmy Connors (160 weeks), Lleyton Hewitt (75 weeks) and Novak Djokovic (53 weeks) in surpassing the 52-week mark in his opening streak as No. 1. By the time Alcaraz replaced him in top spot on 8 September, the Italian’s reign had increased to 65 weeks.
Only four other members of the No. 1 Club have held top spot for an uninterrupted year at any point since the introduction of the PIF ATP Rankings in 1973: Ivan Lendl, Pete Sampras, John McEnroe and Rafael Nadal.
[ATP APP] Alcaraz Prevails In Winner-Takes-All US Open Showdown
Alcaraz completed a double swoop on his rival Sinner on 7 September in New York. The Spaniard prevailed in a four-set championship match to claim the US Open crown from 2024 titlist Sinner as well as usurp the Italian as World No. 1.
Victory for Alcaraz in the winner-takes-all final, in which Sinner would have retained the No. 1 spot himself with victory, ensured that the Spaniard returned to top spot on 8 September, the 22nd anniversary of the day his coach, Juan Carlos Ferrero, first reached No. 1. Alcaraz’s fellow ATP No. 1 Club member Ferrero was one of the first people the 22-year-old thanked in his speech at the trophy presentation inside Arthur Ashe Stadium.
“My team, my family, I am really lucky to have you guys,” said Alcaraz. “The hard work you do to make me even better, not only in the professional part, but the personal part as well. Every achievement that I am [making] is thanks to you, and this one is no less, it’s also yours.”
Indoor Master Sinner’s Late-Season Charge
Alcaraz opened a commanding 2,590-point lead over Sinner in the PIF ATP Live Race To Turin with his US Open triumph. Overhauling such an advantage may have been unthinkable for most players on Tour, but Sinner soon set about providing plenty of reminders that he was still alive in the battle for ATP Year-End No. 1 presented by PIF honours.
The Italian bounced back quickly with an ATP 500 title in Beijing and, although he was then forced to retire from his third-round match against Tallon Griekspoor in Shanghai, Sinner quickly locked in during the European indoor season to keep his Year-End No. 1 rival Alcaraz on his toes.
The 24-year-old dropped just one set across his title runs at the Vienna ATP 500 and the Rolex Paris Masters, while Alcaraz showed signs of fallibility indoors with a shock opening-round defeat to Cameron Norrie in Paris. That defeat enabled Sinner to return to World No. 1 for one week before the Nitto ATP Finals.

Sinner celebrates winning Paris with his team. Photo Credit: Corinne Dubreuil/ATP Tour
Alcaraz Keeps His Cool In Turin, Clinches Year-End No. 1
With Alcaraz back at No. 1 a week later after PIF ATP Rankings points for the 2024 Nitto ATP Finals dropped off, the stage was set for the final battle for Year-End No. 1 honours at the 2025 edition of the season finale. Alcaraz needed to rebound from his Paris struggles to finish the year in top spot, and he managed just that with some impressive opening performances at Inalpi Arena.
Requiring 450 points in Turin to secure ATP Year-End No. 1 presented by PIF honours for the second time, Alcaraz defeated Alex de Minaur, Taylor Fritz and Lorenzo Musetti in the group stage to finally shake off Sinner. Despite Sinner going 21-1 after the US Open, Alcaraz’s consistency across the year had ultimately proved too big a mountain for his rival to climb, although Sinner did enjoy the last laugh of the 2025 season by downing Alcaraz in the Nitto ATP Finals championship match.
“It is a pleasure for me [being] the No. 1,” said Alcaraz, who is just the second active member of the ATP No. 1 Club to secure multiple year-end No. 1 finishes after Djokovic. “Being the No. 1 of the world is something that I’m working really hard for with my team every day. It is a goal. But I think it is a journey that you’re not going through alone. It’s with your whole team, with your family, with your close people behind you always supporting you in the tough and good moments.”

ATP Chairman Andrea Gaudenzi and Head of Corporate Brand and Strategic Advisory at PIF Mohamed Alsayyad present Alcaraz with the ATP Year-End No. 1 presented by PIF trophy. Photo Credit: Corinne Dubreuil/ATP Tour

