Patrick Mouratoglou, the renowned French tennis coach best known for his decade-long partnership with Serena Williams<\/a>, is heading to New York to join Stefanos Tsitsipas\u2019s team for the US Open.<\/p>\n Mouratoglou will work alongside Tsitsipas\u2019s day-to-day coach Thomas Perrin at Flushing Meadows, bringing one of the Greek star\u2019s longest-standing mentors back into his corner at a pivotal point in his career.<\/p>\n The reunion carries particular significance because Mouratoglou\u2019s relationship with Tsitsipas stretches back to his teenage years. Tsitsipas began training at the Mouratoglou Academy as a junior, long before his rise to world No. 3 and two Grand Slam finals. Mouratoglou has remained an influential figure around his career, at times acting as an adviser while Tsitsipas\u2019s father, Apostolos, served as his principal coach.<\/p>\n Now, at 28 and ranked world No. 53, Tsitsipas is again turning to that familiar influence as he tries to rebuild after one of the most difficult periods of his career.<\/p>\n There have been encouraging signs.<\/p>\n In July, Tsitsipas won the Swiss Open in Gstaad, defeating Belgium\u2019s Raphael Collignon 6-4, 6-7(3), 6-3 to claim his first ATP Tour title in almost 17 months and the 13th of his career. He had arrived at the tournament ranked No. 87 and climbed 34 places to No. 51 with the victory.<\/p>\n It was a significant result after a prolonged slide from the upper reaches of the men\u2019s game.<\/p>\n Tsitsipas reached world No. 3 in 2021 and has contested two Grand Slam finals, at Roland Garros in 2021 and the Australian Open in 2023. Both ended in defeat to Novak Djokovic. At his best, he was a fixture in the latter stages of the sport\u2019s biggest tournaments, but injuries, inconsistent results and repeated changes around his coaching set-up have complicated the past two seasons.<\/p>\n In June, Tsitsipas confirmed that his professional coaching relationship with his father Apostolos had ended. Perrin, a long-time coach associated with the Mouratoglou Academy, subsequently took responsibility for his day-to-day programme.<\/p>\n Perrin said earlier this month that he remained convinced Tsitsipas could return to the highest level.<\/p>\n \u201cHe really has the will to get back to the highest level, and I 100% believe he can do it, otherwise I wouldn\u2019t be here,\u201d Perrin said.<\/p>\n \u201cHe is committed, receptive, and physically, his back is fine. There are many things to put back in place gradually, and that\u2019s what we\u2019re working on.\u201d<\/p>\n Mouratoglou\u2019s decision to join the team in New York adds considerable experience to that process.<\/p>\n His reputation was built most prominently during his years working with Williams, one of the defining coaching partnerships of modern tennis. He has since worked with a number of leading players, including Simona Halep, Holger Rune and Naomi Osaka, while building his academy in France into an international training base.<\/p>\n For Tsitsipas, however, the relationship is also personal and longstanding. Mouratoglou was part of the tennis environment in which the young Greek developed from a promising junior into one of the world\u2019s leading players. The familiarity may matter at a point when Tsitsipas is attempting not simply to adjust his game, but to recover the confidence and consistency that once made him a genuine Grand Slam contender.<\/p>\n New York will provide an immediate test.<\/p>\n Tsitsipas has drawn Frenchman Arthur Fils in the opening round. Fils enters the US Open at a career-high world No. 11 after winning his first Masters 1000 title in Cincinnati last weekend and has been seeded No. 10 at Flushing Meadows.<\/p>\n Tsitsipas, meanwhile, arrives after competing at the Winston-Salem Open, where he defeated Jenson Brooksby before losing to Aleksandar Kovacevic.<\/p>\n The US Open has also proved an unlikely obstacle throughout his career. Despite reaching the final at both Roland Garros and the Australian Open, Tsitsipas has never progressed beyond the third round at Flushing Meadows.<\/p>\n That history makes this year\u2019s tournament is not just another opportunity to improve his ranking. It also offers an early measure of whether the changes around him are beginning to translate into something more durable.<\/p>\n Mouratoglou cannot transform a season in the space of a tournament, and his presence in New York guarantees nothing against an opponent arriving with the confidence of a Masters 1000 title.<\/p>\n But Tsitsipas is not turning to an unfamiliar voice. He is bringing back into his immediate team someone who knew his game before he became a global name and who watched at close range as he developed into one of the best players of his generation.<\/p>\n Read also French Tourist, 41, Dies After Collapsing on Crete Hike Near Balos<\/p>\n \u00a0<\/p>\n \u00a0<\/p>\n![\"Patrick](\"https:\/\/greekcitytimes.com\/wp-content\/uploads\/2026\/08\/Screenshot-2026-08-28-at-11.46.56-am.webp)
<\/source><\/picture><\/figure>\n<\/figure>\n![\"Patrick](\"https:\/\/greekcitytimes.com\/wp-content\/uploads\/2026\/08\/Screenshot-2026-08-28-at-11.44.10-am.webp)
<\/source><\/picture><\/figure>\n<\/figure>\nImages courtesy of @stefanostsitsipas98<\/a> and @patrickmouratoglou<\/a> Instagram pages<\/h5>\n