The defending champion Karolina Pliskova pulled off a doubleheader sweep on Friday at the Western & Southern Open in Mason, Ohio, reaching the semifinals by winning two matches with little rest in between. Rafael Nadal could not do the same.
Pliskova completed a match that was suspended overnight because of rain, beating the qualifier Camila Giorgi, 6-3, 4-6, 6-0. After a quick turnaround, she needed only 67 minutes to defeat Caroline Wozniacki, 6-2, 6-4, to make the semifinals.
Nadal, who will move up to No. 1 in the ATP rankings next week, got only halfway there.