The tennis world was rocked just 15 minutes ago when reports emerged that Novak Djokovic had formally asked Australian Open organizers to review the fairness of Jannik Sinner’s use of the Whoop device during matches. The request, short but carefully worded, immediately sparked debate among players, analysts and fans. While no direct accusation of rule violations was made, Djokovic’s intervention reopened long-standing questions about technology, data and competitive balance at the highest levels of tennis.
According to sources close to the matter, Djokovic’s message to the tournament officials was deliberately measured. Rather than accuse Sinner, he would ask whether the use of wearable technology to monitor performance during matches is in line with the spirit and letter of the current regulations. “Novak chose his words with great precision,” said a person familiar with the matter. “He wasn’t attacking Sinner. He was questioning the system that allows gray zones.”
Wearable technology like Whoop has become increasingly common in training environments, offering real-time data on heart rate, recovery and physical stress. However, his presence during the official competition remains a sensitive issue. Although these devices are usually worn under clothing and presented as passive tools, critics argue that the data collected could influence decisions, recovery strategies or even in-game behavior if used improperly.

Djokovic’s concern, insiders say, arises from a principle rather than a rivalry. “He believes that tennis should be decided only by skill, preparation and mental strength,” explained a former player close to Djokovic. “When technology enters the racing environment, even indirectly, questions about equality arise.” This view finds consensus among some players who fear subtle advantages for richer teams thanks to advanced analytics.
The Australian Open has not yet released an official response, but tournament sources confirm that the request has been received and forwarded to the relevant committees. Organizers are reportedly reviewing existing guidelines on wearable devices, which currently allow their use as long as they do not transmit coaching or tactical information during play. “The rules exist, but interpretation matters,” observed one governance expert. “That’s where the controversy often arises.”
What really blew up social media was Jannik Sinner’s response. When asked about the matter shortly after Djokovic’s request became public, Sinner reportedly responded in just six words: “I follow the rules, I always have.” The brevity and calm tone of the statement immediately went viral, with supporters praising its composure and critics analyzing every word for hidden meanings.
People close to Sinner say the response was deliberate. “He didn’t want to stir up controversy,” revealed a member of his team. “Jannik believes that clarity comes from transparency, not from confrontation.” According to the same source, Sinner would always consult with officials to ensure that all equipment used was fully compliant with tournament regulations, including the Whoop device.
Behind the scenes, however, the situation is more complex. Insiders suggest that several players have raised similar concerns privately in the past but have been hesitant to speak publicly. “Novak simply said out loud what many were whispering,” said a coach who works with multiple players in the top twenty. “The difference is that, when Djokovic speaks, the tennis world listens.”

There is a certain frustration emerging from Djokovic’s camp that the technological boundaries in tennis have not evolved as clearly as the game itself. A confidant explained: “Novak is not against technology. He uses data extensively in training. His problem is competition. When the match starts, everyone should be on exactly the same level.” This distinction, his supporters argue, is crucial to understanding his position.
The fans quickly split into two camps. Some see Djokovic’s move as a necessary step to protect fairness, while others accuse him of targeting a younger rival in a period of intense competition. “It’s about integrity, not insecurity,” wrote a former champion on social media. Others counter that Sinner’s compliance with existing rules should finally close the matter.
Tech companies, including Whoop, have so far remained silent. Industry experts point out that wearable devices are designed to store data locally, without real-time feedback during matches. “If there is no immediate benefit, the concern is more philosophical than practical,” said one sports technology analyst. However, even perception alone can influence confidence in the competition.
Inside the locker room, the atmosphere would be tense but thoughtful. An anonymous player said: “It’s not Djokovic versus Sinner. It’s tennis deciding where to draw the line.” This suggests that the debate could go beyond this single episode and influence future regulations of Grand Slam tournaments.

The tournament organizers now face a delicate task. Any decision will have to balance innovation and tradition, clarity and flexibility. A hasty response could exacerbate tensions, while silence could be interpreted as evasion. “They need to explain not only what the rules are, but why they exist,” said one former executive. “Otherwise, these debates will continue to resurface.”
At the moment no irregularity has been hypothesized and there is no talk of sanctions. Yet the conversation sparked by Djokovic’s request and Sinner’s six-word response has already accomplished something significant: It has forced tennis to confront uncomfortable questions about fairness in a rapidly changing era. Whether this moment leads to regulatory changes or fades into the background, its impact is already being felt.
For fans around the world, the episode is a reminder that modern tennis is no longer just about forehands and footwork. It’s also about technology, interpretation and trust. And with legends like Djokovic and emerging stars like Sinner at the center of the debate, the sport’s next chapter could be written as much by the rules as by the performances.