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Wiktorowski, who joined Swiatek's team in 2022, helped her become the first Polish player to reach world No.1 and she has since spent 123 weeks at the top of the rankings.

Swiatek also won 19 of her 22 career titles and an Olympic bronze medal in Paris earlier this year with Wiktorowski, along with four grand slam victories.

"After three years of the greatest achievements in my career, together with my coach Tomasz Wiktorowski we decided to part ways," Swiatek wrote on Instagram.

"I want to start with a big thank you and appreciating our work together."

Swiatek has not competed since losing to Jessica Pegula in the quarter-finals of the US Open, choosing to withdraw from the China Open for personal reasons.

The 23-year-old has also pulled out of the recent Korea Open in Seoul, citing fatigue, and next week's Wuhan Open.

Swiatek won the French Open and US Open during her opening season with Wiktorowski, before embarking on a 37-match winning run in 2022, the longest streak by a woman this century.

The Pole won a fifth grand slam, which was her fourth with Wiktorowski, at Roland Garros in June, making it three consecutive wins at the tournament in Paris.

"Coach Wiktorowski joined my team for three seasons, when I strongly needed changes and a fresh approach to my game," Swiatek continued.

"His experience, analytical and strategic attitude and enormous knowledge about tennis helped us to achieve things I've never dreamed of only a few months after we started working together."

But Swiatek was disappointed with her hard-court performances this season, exiting the Australian Open in the third round and the US Open in the last eight.

She said she has held "first talks" with prospective new coaches and will take a "couple of weeks" to start work with her next appointment.

"Our main goal was to become number one player in the world and coach Wiktorowski was the one who said it first," Swiatek concluded.

"Due to this important change on my team, I give myself a couple of weeks to start cooperation with a new coach.

"I'm in the middle of first talks with coaches from abroad (non-Polish) because I'm ready to take the next step of my career. I will let you know when I make a decision."