Iga Swiatek overcame a tricky opening set before racing to a 7-6(3) 6-1 victory over Czech 10th seed Marketa Vondrousova on Friday in a clash between the last two Grand Slam winners to reach the Cincinnati Open semi-finals.
World number one Swiatek, who raised her game at the key moments, broke the Wimbledon champion five times and saved four of six break points to seal victory in 91 minutes.
"It wasn't easy to adjust to her spin because she's a lefty," French Open champion Swiatek said during her on-court interview.
