Alexander Zverev is set to become the world number one when the ATP rankings are updated and will finish the year at the summit. The German star confirmed his top ranking following a victory over Tallon Griekspoor that advanced him to the Vienna Open quarter-finals, while Jannik Sinner has ended his season early due to a knee injury.
Zverev Emphasizes Fitness Importance
Both Sinner and Carlos Alcaraz have spent extended periods on the sidelines with injuries this year, prompting Zverev to explain his advantage in durability. Prior to Zverev claiming his first Grand Slam title at Roland Garros, either Alcaraz or Sinner had captured nine consecutive major titles. Alcaraz missed nearly five months after sustaining a wrist injury during the clay season, and Sinner has been sidelined since defeating Zverev in the Wimbledon final in July.
Addressing critics who question whether he is truly the best player despite reaching the number one spot, Zverev highlighted how much emphasis he places on physical preparation. “This is my personal opinion, I think that fitness, being healthy and being fit is an absolutely massive part of sport,” Zverev told a post-match press conference in Vienna.
Reflecting on earlier defeats, Zverev admitted that Sinner clearly outperformed him during the first six months of the season. He noted that he held the second-best position because Alcaraz was unable to compete due to injury. Zverev detailed his rigorous December off-season routine, explaining that he dedicates five or six hours daily to physical training alongside a brief period on the tennis court to ensure he can maintain his level through a deciding fifth set.
“I am looking forward to Jannik and Carlos being healthy again, and hopefully competing with them for many, many more years, you know not just next year but many years to come. Hopefully I can continue making it interesting with those two guys as well,” Zverev stated.
Head-to-Head Records Against Rivals
Although Zverev holds the upper hand in fitness and availability, his head-to-head records against both competitors reflect different challenges. Zverev and Alcaraz were tied entering the 2026 season, but Alcaraz now leads 7-6 following a dramatic semi-final encounter at the Australian Open earlier this year.
The rivalry with Sinner presents a more one-sided statistic. Zverev initially led 4-1 after the 2023 season, but Sinner has since claimed nine consecutive victories, including five wins in 2026 capped by the Wimbledon final.
The overall head-to-head stands at 7-6 in favor of Alcaraz and 11-4 in favor of Sinner. Their 2026 encounters include Alcaraz defeating Zverev 6-4 7-6(5) 6(3)-7 6(4)-7 7-5 in the Australian Open semi-final, and Sinner defeating Zverev 6(7)-7 7-6(2) 6-3 6-4 in the Wimbledon final.
Zverev will not face Sinner again until at least 2027, but a potential meeting with Alcaraz could occur this week at the Vienna Open if both players advance to the final. At the quarter-final stage, Zverev is scheduled to face Arthur Fery, while Alcaraz matches up against Tommy Paul.
