World number one Iga Swiatek turned around a first-set deficit to beat Wimbledon champion Marketa Vondrousova 7-6 (3) 6-1 and book her place in the semi-finals of the Western and Southern Open in Cincinnati.

Swiatek, the French Open champion, had trailed Vondrousova 5-4 in the opening set, but rallied to break back at 5-5 – only for both players to lose their next service games which brought up a tie-break.

Having taken that 7-3 with two more crucial mini-breaks, Swiatek maintained her momentum in the second set.

An early break and hold saw Swiatek lead 2-0 and she never relinquished control, closing out the match with two more breaks to complete the turnaround in one hour and 33 minutes.

β€œAt the beginning, it wasn’t easy to get used to her lefty spin, but I’m happy that I kind of played better and better throughout the whole match. At the end, I was really solid,” the Pole said on the WTA Tour website.

β€œI made good decisions and chose the right solutions to win these points. I think she also kind of made some mistakes. The most important (thing) is to use your opportunity and I’m happy that I did that.”

Swiatek goes on to face Coco Gauff after the American eased past Italian qualifier Jasmine Paolini 6-3 6-2.

The 19-year-old will be hoping to make the most of the support of the home crowd when she faces the world number one – having not taken a set off Swiatek in their past seven meetings.

French Open runner-up Karolina Muchova also advanced to the semi-finals after Marie Bouzkova was forced to retire following three games of their match.

She will meet Aryna Sabalenka in the final four, after the second seed endured a back-and-forth affair to eclipse fifth seed Ons Jabeur 7-5 6-3.