The reason for Sinner's medical tests before Cincinnati and the US Open is revealed

Jannik Sinner has become one of the big names of the day in the tennis ecosystem. The Italian came into the spotlight this morning due to some information from his home country related to visits to a medical clinic in Milan just before his return to competitive play. The timing, of course, was slightly suspicious: it was reported that he urgently called his trusted physiotherapist to undergo several check-ups.

The tests took place at the Physioclinic in Milan, on Via Fontana, and lasted for just over a couple of hours. The Italian appeared alongside four members of his team, who supervised the entire process, and left the place after noon local time. Jannik, who had returned to training just this week after spending a couple of well-deserved vacation weeks (of course, after his crowning at Wimbledon), left with a calm demeanor and even some smiles, with a body language that seemed to dispel any urgent problem, leading the Italian press towards a sense of tranquility. 

Image

Why did Sinner undergo these tests? What has happened to Jannik?

As hours passed, several Italian media outlets investigated the reasons that led the player from San Candido to interrupt his training for these checks. It's worth noting that this is not the first time Jannik has decided to undergo thorough tests before an important block of the season: his visits to J Medical in Turin right after Roland Garros were widely discussed, aimed at understanding the reasons behind his impressive physical drop in the match against Juanma Cerúndolo and ruling out any significant underlying issues before the grass season arrived.

Jannik #Sinner è a Milano per dei controlli (programmati) in vista della partenza per gli Usa, che avverrà domenica. Il ginocchio del famoso cerotto non desta preoccupazione, nulla di serio. Riponete la valeriana (o altro) nell'apposito mobiletto #tennis https://t.co/J0aBBGMkoe

— Luigi Ansaloni (@LuigiAnsaloni) August 4, 2026

The meticulousness with which Sinner approaches his body, especially after past episodes, is not surprising. In this case, it has been the Gazzetta that uncovered the possible reason why Jannik wanted to take this extra precaution. It involves a discomfort in his right knee, although reports suggest it is more about prevention rather than a real and concerning pain. These minor aches could be the reason for his absence in Canada, which he announced earlier than one might have imagined, and were evident in some photos that surfaced last week: Sinner visited the aforementioned J Clinic in Turin (before starting his pre-season training) and left with a small protection covering his knee.

Beyond the total care and surgical attention to detail that the world number one shows towards his physical condition, sources from Italy do not point to any source of total concern and distance themselves from doomsday speculation. There are no altitude issues for the assault on New York, just all the imaginable precaution for someone who perhaps needs to pay more attention to his physical state than other elite tennis players. The logical thing, then, will be to see Jannik in Cincinnati in a week and a half... and we will be here to follow him.

This is an automatic translation. You can read the original news, Se revela el motivo de las pruebas médicas de Sinner antes de Cincinnati y US Open