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US Open – Quarter Final Jannik Sinner ITA during his quarter final round match at the 2025 US Open at Billie Jean National Tennis Center in New York City, NY, USA, on September 3, 2025. Photo by Corinne Dubreuil/ABACAPRESS.COM New York City United States PUBLICATIONxNOTxINxFRAxUK Copyright: xDubreuilxCorinne/ABACAx

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US Open – Quarter Final Jannik Sinner ITA during his quarter final round match at the 2025 US Open at Billie Jean National Tennis Center in New York City, NY, USA, on September 3, 2025. Photo by Corinne Dubreuil/ABACAPRESS.COM New York City United States PUBLICATIONxNOTxINxFRAxUK Copyright: xDubreuilxCorinne/ABACAx
A tennis player’s entourage plays an important role in the grueling modern tennis tour. For example, you have Carlos Alcaraz, who has his older brother Alvaro often with him, doubling as a hitting partner, a source of moral support, and recently, a barber. Novak Djokovic has a crew that has undergone several changes recently with exits like Andy Murray and entries like Dusan Vemic. And then you’ve got Jannik Sinner, whose coaching staff has a more infamous reputation.
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After all, it was a little over a year ago that Sinner tested positive for Clostebol twice, a banned substance. Sinner claimed that the drug entered his body after his fitness coach, Umberto Ferrara, used a healing spray that contained the substance. Though this explanation was accepted by the tribunal overseeing his case (leading to a reduced ban), Sinner let go of both Umberto Ferrara and physiotherapist Giacomo Naldi.
Though Sinner rehired Ferrara in a shock move a few short weeks ago, the physiotherapist post had been left vacant ever since he parted ways with Ulises Badio, who was also Djokovic’s former trainer, just before Wimbledon. Until now, that is. Because Team Sinner has a new physio in Alejandro Resnicoff.
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The new appointment was announced by The Sinner Times on X as they wrote, “It’s official. Alejandro Resnicoff is now part of Team Sinner. Confirmed by @paolobertolucci, the Argentinian physiotherapist officially joins Jannik’s camp — a fresh face as the season enters its final stretch.”
🚨 It’s official 🚨
Alejandro Resnicoff is now part of Team Sinner. Confirmed by @paolobertolucci , the Argentinian physiotherapist officially joins Jannik’s camp — a fresh face as the season enters its final stretch. pic.twitter.com/qWk4ZKVnAv
— The Sinner Times (@sinnertimes) September 20, 2025
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Jannik Sinner has faced intense scrutiny and backlash from tennis legends and fellow players, questioning fairness. Recently, Bjorn Borg publicly called Sinner’s reappointment of Umberto Ferrara “very strange” reigniting debate on the doping controversy.
Amid Borg’s fresh critique, Sinner made the permanent addition of Resnicoff, a renowned Argentine physiotherapist, to his team. Resnicoff brings two decades of ATP Tour experience and proficiency in English, Spanish, and Italian, having worked with top players and ensuring peak physical recovery under tournament pressure. The duo shares history, having collaborated during Wimbledon 2023 and the launch of the Sinner Foundation in Milan. Their renewed partnership signals stability, as Sinner seeks a trusted, expert hand to manage the grueling demands of professional tennis.
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Resnicoff’s presence promises meticulous injury prevention, recovery management, and tailored physical preparation, critical for sustaining form across high-stakes matches. Having already conquered Australia and Wimbledon, Sinner now sharpens consistency, endurance, and momentum toward Turin’s ATP Finals. But before Turin, he has one stop to make: Beijing. Sinner is now gearing up to compete in the Beijing Open, which is set to commence on September 23.
The Italian star isn’t just shoring up his body—he’s sending a message that precision, experience, and trust will dictate the outcome. As the Asian swing unfolds, one thing is certain: the courts won’t know what hit them. And for Sinner, the game off-court might just be as decisive as the one on it.
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Is Jannik Sinner's team shakeup a masterstroke or a recipe for disaster?
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Spanish ace says he doesn’t like the way Jannik Sinner plays the game
Tennis chatter rarely dies down, especially when it comes to the ever-watchable Jannik Sinner. While the Italian has been carefully rebuilding his team and recalibrating his game for the final stretch of the season, not everyone is clapping from the sidelines. Some peers, with opinions as sharp as their backhands, aren’t shy about airing their grievances. And now, a top Spanish ace has made it clear: Sinner’s style isn’t exactly winning hearts in certain corners of the tour.
Men’s tennis currently revolves around the electric rivalry between Jannik Sinner and Carlos Alcaraz, mesmerizing fans worldwide with high-stakes clashes. Jannik Sinner, despite a three-month doping ban, triumphed at the Australian Open and Wimbledon, proving resilience defines his journey. Carlos Alcaraz, conversely, claimed Roland Garros and the US Open, saving three match points in the former, showcasing nerve and brilliance under pressure. Their dominance renders tournaments thrilling yet predictable, as some fans await emerging challengers to disrupt this captivating narrative.
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Pedro Martinez praises Sinner as the embodiment of modern tennis, saying, “Jannik is probably the best example of modern style”. He observes how matches end quickly, with players delivering punishing forehands and backhands consistently. Yet, Martinez nostalgically adds, “The game was more tactical before… To be honest, I preferred the tennis that was played in the past.”
In the end, Sinner’s thunderous baseline battles and Alcaraz’s clutch heroics define modern men’s tennis, whether purists like it or not. Martinez may scoff at Sinner’s style, but the results say it all. Fans are caught between awe and eye-rolls, watching history being rewritten with every slam-winning shot. Love it or hate it, this is tennis evolving at full throttle, leaving no room for polite indifference.
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Is Jannik Sinner's team shakeup a masterstroke or a recipe for disaster?