Wim Fissette

Fissette reached a career high singles ranking of 1,291 on 23 August 1999.[1]

Fissette first took on the role of Kim Clijsters' coach upon the Belgian making a comeback onto the WTA Tour in 2009, having previously served as her hitting partner prior to her first retirement in 2007. Under his stewardship, Clijsters won the US Open that year as a wildcard entry, and successfully retained the title twelve months later. She also won the 2010 WTA Tour Championships, which was followed shortly after by the Australian Open early the following year. She also reigned as the world number one for a solitary week in 2011. Fissette and Clijsters split in September that year.[2]

After splitting from Clijsters, Fissette became the coach of Sabine Lisicki shortly before the commencement of the 2013 French Open. Although Lisicki was unable to win any titles under Fissette's leadership, she reached the final at Wimbledon, losing to Marion Bartoli in straight sets after ending Serena Williams' 34-match winning streak and preventing her from equaling elder sister Venus' 35-match winning streak set in 2000 en route.[3][4]

In 2014, Fissette became the coach of Simona Halep. Their partnership brought about improved results for Halep, who that year reached her first Grand Slam quarter-final at the Australian Open, the final of the French Open and then the semi-finals at Wimbledon. She also reached a career high ranking of world number two in August that year. The pair split at the end of the year, with Halep wanting to focus on working with coaches from her native Romania.[5][3][6]

In February 2015, Fissette became the coach of former world number one Victoria Azarenka, whose previous coach Sam Sumyk defected to coach Eugenie Bouchard (and later Garbiñe Muguruza). At the time of this appointment, Azarenka was ranked 50th in the world, her lowest ranking since June 2007.[7] Fissette remained with Azarenka until she announced her pregnancy in mid-2016.

From the start of 2017 he became the coach of Johanna Konta. During his time coaching her she had a very successful start to the year, winning the Sydney International and the Miami Open and getting to the quarter-finals of the Australian Open. The pair also had a successful grass court season, with Konta becoming the first British woman since Virginia Wade in 1978 to reach the semi-finals of Wimbledon. She reached a career high ranking of number 4 in the world with Fissette's help. However, it was announced on 18 October 2017 that Fisette and Johanna had mutually decided to split, following her string of bad results during the Asian tennis swing.[8]

In a relatively surprising news, Fissette began working with two-time Grand Slam champion and former world number one Angelique Kerber in 2018 after the German struggled throughout 2017 and has fallen out of the top-20.[9] Kerber was the third Major champion Fissette worked with in his coaching career. They split in October 2018 following differences of opinion with regard to Kerber's future direction. With Fisette, the 30-year-old Kerber, who reached No. 1 in the rankings in 2016 but now sat third, reached the semi-finals of the Australian Open before going on to win Wimbledon.[10] On January 5th, 2020 The Japan Times published an article in which he is named as the new coach of Naomi Osaka, the Australian Open Women's Champion in 2019.[11]

Coaching Grand Slam performance timeline.

• Profile on ATP World Tour official website