Caroline Wozniacki during her quarter-final match against Karolina Pliskova at the WTA tournament in Toronto on Friday. Pic/AFP
Caroline Wozniacki during her quarter-final match against Karolina Pliskova at the WTA tournament in Toronto on Friday. Pic/AFP

Caroline Wozniacki survived three rain delays to book her spot in the WTA Toronto tournament semi-final with a marathon 7-5, 6-7 (3/7), 6-4 victory over world No. 1 Karolina Pliskova on Friday.

The sixth seeded Wozniacki posted her first career win over a number-one player in seven tries as she blasted eight aces in the two-hour, 56-minute centre court match. She next faces American Sloane Stephens, who saved three match points in the third set to oust Lucie Safarova 6-2, 1-6, 7-5 in their quarter-final.

"I thought she started off really strongly and she was attacking and playing really, really well. After that, I feel like I stepped a little bit closer to the line just to try and take away a little bit of time. I once I kind of got on a roll, I started serving better," Wozniacki said.

"It's just tough to play her in these conditions. She's putting everything back, so obviously, I did some mistakes," said Pliskova.

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