Iga Swiatek, the world No. 1, has hired Wim Fissette as her new head coach. Fissette, 44, is hugely experienced and is one of the most successful and highly regarded coaches on the WTA Tour. The Belgian has coached former world No. 1 players Naomi Osaka, Kim Clijsters and Angelique Kerber to six Grand Slam titles between them. He has also worked with other former world No. 1s like Simona Halep and Victoria Azarenka, taking both to Grand Slam finals. When Swiatek parted with her long-term coach T