World No.1 Iga Swiatek has hired Wim Fissette as her new coach as she continues to prepare for next month's WTA Finals Riyadh.

"I'm happy to announce that Wim Fissette is joining our team," Swiatek posted on social media. "As you know, I'm preparing for the WTA Finals but my perspective is, as always, long-term, not short-term. I said many times that my career is a marathon for me, not a sprint and I'm working, operating and making decisions with this approach.

"I want to say that I'm very excited and looking forward to working with Wim. He seems to have a great attitude, vision and huge experience at a very top level of tennis. It's always crucial to try and get to know each other better but we're off to a good start and I can't wait to compete soon."

The news comes two weeks after the end of her three-year partnership with Tomasz Wiktorowski, with whom she had worked since the end of 2021 -- a period during which Swiatek won fiour of her five Grand Slam titles and ascended to World No.1 for the first time. Prior to Wiktorowski, Swiatek had been coached by Piotr Sierzputowski since 2016. Fissette will be her first non-Polish coach.

Swiatek will be the sixth sometime World No.1 player Fissette has coached. The 44-year-old Belgian has previously had stints with Kim Clijsters, Simona Halep, Victoria Azarenka, Angelique Kerber and Naomi Osaka. Fissette has coached Osaka in matches against Swiatek twice -- in the 2022 Miami final, which Osaka lost 6-4, 6-0; and in the Roland Garros second round this year, which Osaka lost 7-6(1), 1-6, 7-5 from match point up. Osaka announced the end of their four-year collaboration in September.

Swiatek has not competed since her quarterfinal loss to Jessica Pegula at the US Open, and her World No.1 ranking will be under threat from Aryna Sabalenka in the coming weeks.