Bencic and Wozniacki have met on six occasions and the Swiss player has managed to win four matches. The former world number 1 was in good spirits after beating a potentially tricky opponent.

"It's been a while since I've played her. I think a lot of things have happened since then. I think I just stayed really steady and I tried to stay really focused. That was really it. I tried to not really think about the past matches, just think about this one as a new one, new experience, a new stadium. That was really that," Wozniacki said.

In men's doubles action China's Zhang Ze and Gong Maoxin lost out to Marcelo Melo and Lukasz Kubot. The Chinese pair lost 4-6 ,6-4, 7-10.

In women's doubles, China's Duan Yingying and Wang Yafan lost 6-1, 4-6, 10-7 to Nicole Melichar and Kveta Peschke.

Anastasija Sevastova advanced to the next round after Madison Keys withdrew from the tournament.

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