1996–2007: Founding the Mouratoglou Tennis Academy Mouratoglou was inspired to start a tennis academy after being unable to pursue a tennis career in his teens, stating, "I wanted to offer young people the chance I didn’t have when I was 15 or 16, when I was a very good tennis player with ambitions to turn pro. I wasn’t given a chance so it became a goal of mine to give many young people a chance." He was inspired by the model of
Nick Bollettieri's academy. In 1996, Mouratoglou convinced veteran coach
Bob Brett to start a tennis academy together in
Montreuil, originally named the Bob Brett Academy. The two partnered together for six years, with Brett teaching Mouratoglou the basics of coaching. After Brett left the academy, Mouratoglou changed its name to the
Mouratoglou Tennis Academy, and it was eventually relocated to
Biot, on the
French Riviera, in 2016. Mouratoglou began coaching players on the professional tour in 1999. He began coaching 14-year-old
Marcos Baghdatis after inviting him to his academy in October 1999 on a one-week basis. Baghdatis was, according to Mouratoglou, "not an athlete at all." However, within seven years, Baghdatis would become a junior world No. 1, win the
2003 Australian Open boys' title, reach the final of the
2006 Australian Open, and reach a career-high
ATP singles
ranking of world No. 8.
2007–2012: Rise in prominence In July 2007, Mouratoglou began coaching 16-year-old
Anastasia Pavlyuchenkova. Within two years, Pavlyuchenkova reached the
WTA top 30. Mouratoglou and Pavlyuchenkova ended their partnership in August 2009, and Mouratoglou moved on to coaching both
Aravane Rezaï and
Yanina Wickmayer. Rezaï enjoyed a successful
2010 season, entering the world top 20 and winning the
2010 Madrid Open, whilst Wickmayer reached a career-high ranking of world No. 12 in April 2010. Mouratoglou stopped working with Rezaï and Wickmayer in August 2010 and April 2012, respectively. In December 2010, Mouratoglou began coaching 16-year-old
Laura Robson, who was world No. 217 at the time and still struggling to break into the senior tour. Mouratoglou and Robson worked together for six months before separating shortly before the
2011 Wimbledon Championships, with Robson still struggling to make any progress on the WTA Tour. During this same period, Mouratoglou also coached
Jérémy Chardy within his academy. Their partnership ended after roughly eight years.
2012–2022: Coaching Serena Williams In March 2012, Mouratoglou began coaching
Grigor Dimitrov and set about guiding him back into the ATP top 100, having dropped to No. 102 by the time their partnership began. This partnership ended in September of that year, when Mouratoglou moved on to coaching
Serena Williams. In 2014, Mouratoglou invited 10-year-old
Coco Gauff to train at his academy, stating, "She impressed me with her determination, athleticism and fighting spirit." In 2015,
Stefanos Tsitsipas also began training at the academy, coached by Mouratoglou and his father
Apostolos.
2022–present: Coaching Simona Halep and Holger Rune In spring 2022,
Simona Halep began training with Mouratoglou. In October 2022, as a result of Halep's doping suspension and absence from the
WTA Tour, Mouratoglou began coaching 19-year-old
Holger Rune. Under Mouratoglou's coaching, Rune won his first
Masters 1000 title, defeating
Novak Djokovic in the final of the
2022 Paris Masters. On 3 April 2023, Rune announced his split with Mouratoglou after six months together. However, they continued to collaborate only a few weeks later, and subsequently resumed their previous coaching relationship. At the end of August 2023, however, Rune again announced his split with Mouratoglou after almost twelve months together. Later, on 21 February 2024, Rune and Mouratoglou reunited once again after
Boris Becker and
Severin Lüthi chose to stop working with Rune. Rune and Mouratoglou parted ways for a third time on 29 July 2024. ==Other ventures==