Jannik Sinner Ends 2026 Tennis Season Due to Knee Injury
World number one Jannik Sinner has ended his 2026 tennis season prematurely to focus on treating a right knee injury caused by iliotibial band syndrome. Sinner announced in a video published on October 6 that he will not return to competitive play until 2027.
The injury forced the Italian star to miss the entire American and Asian swing. Sinner accumulated 44 wins and 3 losses in 2026, capturing five consecutive Masters 1000 titles and his second Wimbledon crown before physical issues halted his momentum.
ITBS Inflammation Requires Structured Rehabilitation
Dr. Fabrizio Tencone, director of the Isokinetic medical center in Turin, detailed the mechanics of the condition in an interview with Sky Sport. Tencone explained that iliotibial band syndrome—clinically known as ITBS—involves inflammation of a tendon-like band.
“When it infiames, that part swells and changes shape,” Tencone told Sky Sport, noting that the friction occurs against the lateral femoral condyle. The specialist emphasized that tendon healing requires a structured rehabilitation window of three to four months. “The pain goes away much earlier… but for the return there is a need for all this time,” Tencone stated, advising against complete rest on the couch in favor of active rehabilitation and progressive load management.
Team Strain and Mental Toll of Rehabilitation
Sinner’s attempts to salvage his season through limited training sessions in Monte Carlo ultimately proved unsustainable, leading to internal frustrations within his coaching setup. It was noted that 40-minute practice sessions before retreating to the locker room underscored the severity of the physical breakdown following a grueling early-season schedule that culminated in a Roland Garros run and a Wimbledon triumph.
Fellow Italian tennis professional Matteo Berrettini weighed in on his compatriot’s decision while competing at the Shanghai Masters. “Jannik has the best mentality I’ve ever seen, so if he made this choice it was the right one for him,” Berrettini said. Berrettini acknowledged the psychological difficulty of managing long-term injuries, adding, “So what it means to be injured and the last thing you want is for someone to ask you when you’ll be back.”
Zverev May Overtake Sinner for World Number One
With Sinner sidelined for the remainder of the season, ATP ranking points from late 2025—including 50 points from Shanghai, 500 from Vienna, 1,000 from Paris, and 1,500 from the Nitto ATP Finals—will drop off. Sinner currently holds 11,000 ranking points, but Alexander Zverev, sitting second with 9,720 points, is positioned to overtake him for the world number one ranking in the coming weeks.
Orthopedic specialists note that while surgical cases involving similar lower-extremity conditions can require up to six months of recovery, Sinner’s conservative rehabilitation path targets a return for the 2027 season. It is unclear whether coaching adjustments will reshape Sinner's team before his return.