Jannik Sinner Ends 2026 Season With Knee Injury

Jannik Sinner ending his season is the kind of news that shakes the whole tennis calendar. The world number one confirmed this week that he will not play again in 2026 because of a right knee injury that has kept him off court since winning Wimbledon in July.

According to Reuters, Sinner has not played since beating Alexander Zverev in the Wimbledon final on July twelfth. The twenty-five-year-old missed the North American hard-court swing, the US Open and the Asian swing too.

What Sinner said

In a video posted on Instagram, Sinner kept it direct. "Me, together with the doctors, have decided that I need a course of treatment for my knee, which means that the 2026 season is officially over," he said, as quoted by TNT Sports.

He added that he also has to think about his long-term career. His team said he will follow a course of treatment for inflammation in the knee, so he has time to recover before preparing for next season. A spokesperson told The Athletic there has been no surgery and no plans for any procedure right now.

A huge hole in the calendar

Sinner pulled out of the Shanghai Masters and then the China Open in Beijing, where he was the defending champion. Now he will also skip Vienna, the Paris Masters and the ATP Finals in Turin, according to Olympics.com.

That last one stings for home fans. Sinner lifted the Turin trophy in each of the last two years, and the Davis Cup Finals are also in Italy, which he will miss as well.

Before the injury, his season was absurdly good. He compiled a record of forty-four wins and three losses, won six titles and posted one of the best winning percentages in ATP history.

The ranking fallout

The numbers get brutal fast. Rankings count only the last fifty-two weeks, and Sinner would have defended roughly three thousand points from Vienna, Paris and Turin. Tennis Majors reported that he is about to lose far more than his rivals will.

The result is that Zverev, who lost that Wimbledon final, is now set to finish the year as world number one for the first time. Carlos Alcaraz, who just defended his Tokyo title, sits well back in the points race.

Djokovic backs the call

Novak Djokovic called the decision smart. He said Sinner has to think about the long term, and that giving himself more years in the sport means more chances to reach his goals.

He also pointed to the mental side of knee trouble. When you are on court, he said, you wonder whether you are truly healed, and a knee affects every single movement. Former Italy Davis Cup captain Corrado Barazzutti called it a particularly serious injury, per Tennis World USA.

Why this one hurts the sport

Sinner and Alcaraz have carried men's tennis for the past couple of years, and the rivalry is the main reason casual fans tune in. With Jannik Sinner gone for the rest of the year, the autumn indoor swing loses its biggest draw and tournament directors lose a headline name.

Ben Rothenberg noted in his newsletter that this is the longest stretch without a match ever recorded by a player holding the ATP number one ranking, a record Sinner had already set himself last year. Both of those absences began right after he won a major.

The Vienna tournament director said he fully understood the decision and wished Sinner well for his comeback. That tone matches most of the reaction across the tour: disappointment, but also respect for choosing health over a rushed return.

What comes next

Italian reports say Sinner travelled to Lyon for a specialist assessment and received a platelet-rich plasma injection, though that detail comes from press reports and not from his team. Treatment is expected to take around three to four months, with a conservative rehab plan.

The hope is that he is back and at his best for the Australian Open in January. For more on the sports world, browse our sports coverage.

Sinner ending his season early is a rough break for fans, but it looks like a bet on a longer career. Tennis will feel his absence this autumn, and the race to see who owns the sport at the start of 2027 just got more interesting.