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.
