This is everything that is known about Sinner's knee injury: "It is concerning"

Jannik Sinner continues to make news in the tennis world due to the state of his knee, and his participation in the Six Kings Slam is uncertain and seriously at risk. This raises doubts about the remaining tournaments until the end of the season, and concern is growing in Italy regarding the condition of his knee.

According to information we have received at Punto de Break, Jannik Sinner has informed the organizers of the Six Kings Slam that it will be very difficult for him to participate in the tournament, to the point of alerting them to begin working on a possible Plan B. The Italian has not yet given a definite 'no' or officially announced his absence, but he will make a final decision over the next week. What he has conveyed, however, is that, as of today, the situation does not look very promising.

The organization is already considering several names to replace Sinner if he ultimately cannot travel to Riyadh. Daniil Medvedev, who participated in 2024, Ben Shelton, and Arthur Fils are among the main options being discussed, although the appearance of other candidates cannot be ruled out.

From Italy, pessimism grows regarding Sinner and his knee

The news coming from Italy is not particularly optimistic either. Sky Sport Italia, which had maintained some hope for an immediate return by Sinner in recent days, has significantly hardened its stance following the confirmation of his withdrawal from Shanghai.

The director of Sky Sport, Federico Ferri, emphasized the need for maximum prudence regarding his recovery. The team's great fear for the world number one is a possible relapse that could turn the knee issue into something chronic. For this reason, all precautions are being taken before authorizing his return to competition.

The problem Sinner is dealing with is not considered particularly severe, but it does involve a delicate recovery with a significant risk of relapse and chronicity. This is exactly the scenario his team wants to avoid at all costs.

Sinner does not want to create a premature return to avoid a relapse or chronicity in the tendons of his knee that could hinder his career, especially with a decade still ahead of him. He and his team have decided that he will only return when there is sufficient assurance that his knee can handle the demands of competition again. Forcing a return now could mean losing much more time later.

🚨 INFORMACIÓN Jannik Sinner ha comunicado a la Six Kings Slam que tiene MUY DIFÍCIL poder participar en el evento y les ha advertido para que trabajen en un Plan B para sustituirle. Aunque aún no ha dado su 'No' oficial, les ha transmitido que durante la próxima semana tomará una decisión respecto a su participación en este evento. Los nombres que manejan en la organización como favoritos para sustituir a Jannik son Medvedev, que participó en 2024, Shelton o Fils, aunque no se descarta algún otro tenista.

— José Morón (@jmgmoron) October 4, 2026

The Riyadh tournament takes place from October 21 to 24 and comes immediately before the ATP 500 in Vienna, one of the events currently marked on the Italian's calendar. His participation in both is far from guaranteed. Then he would have Paris and Turin as the last dates on the calendar. Everything now remains uncertain as they await the resolution of his inflammation.

The visit to Lyon and a very clear recommendation

Last Friday, an important news about Sinner was revealed, as he traveled to Lyon for a new medical consultation regarding his knee. He consulted with specialist Bertrand Sonnery-Cottet, an orthopedic surgeon recognized for his experience with knee injuries in elite athletes. Among other patients, he has treated footballers like Bremer, Manuel Locatelli, Khéphren Thuram, and Zlatan Ibrahimovic, as well as Kyrian Mbappé.

According to information published by the Gazzetta dello Sport, the specialist has recommended not to undergo surgery yet and to continue with the conservative treatment that Sinner has been undertaking for the past few weeks.

This allows us to interpret that his knee does not currently present a condition that necessitates surgical intervention, but it does not mean that the problem is resolved. In fact, the time he has spent away from competition and the difficulties he continues to face in increasing training loads show that the recovery is being much slower than initially expected.

Training sessions of only ten minutes in Monte Carlo

There is another detail that increases concern. Italian media have reported the difficulties Jannik Sinner is facing even during his training sessions in Monte Carlo.

Corriere and Gazzetta have reported on on-court sessions interrupted after only ten minutes because the Italian was not in a position to continue. A particularly significant sign, considering that several months have already passed since his last official match.

The world number one has not competed since the Wimbledon final on July 12, and since then he has postponed his return successively. First, he missed the North American tournaments, then the US Open and Beijing, and this weekend his absence in Shanghai was also confirmed.

Each attempt to increase the pace of work is being measured meticulously. Sinner's team understands that risking a few weeks to try to save certain tournaments on the calendar could end up compromising several months if the injury reappears with greater force.

The next week should be decisive. It will be then that Jannik Sinner will finalize his decision regarding the Six Kings Slam, and his options to compete later in Vienna may also start to clarify. As of today, with the risk of relapse still present, his team does not want to make any decisions that could favor the chronicity of the problem. The calendar is pressing, but the absolute priority remains the knee and a career they want to be long and as healthy as possible.

This is an automatic translation. You can read the original news, Esto es todo lo que se sabe de la lesión de rodilla de Sinner: "Es preocupante"