One player who does appear set to play in Hong Kong is China's Wang Qiang, who is in the form of her life.
Caroline Wozniacki of Denmark kisses the winner's trophy after beating Anastasija Sevastova of Latvia in the women's singles final in the China Open at the National Tennis Center in Beijing, Sunday, Oct. 7, 2018.
Recently-crowned US Open champion Naomi Osaka has pulled out of the ongoing Hong Kong Open citing a back injury. "I needed to really work it, to work hard, win the points".
"I'm just happy to have reached 30 today, I'm going to enjoy that", said Wozniacki, a former number one.
Wozniacki's victory is bound to boost her confidence ahead of this month's season-ending WTA Finals in Singapore, where the 28-year-old is the defending champion.
Wozniacki, ranked world No. 2, was very concentrated in the match and endured the pressure of the end to beat her unseeded opponent, world No. 20, in less than an hour and a half, reports Efe news.
"I'm kind of happy that I was able to get this far".
The Japanese star required treatment to her lower back during her semi-final defeat to unseeded Anastasija Sevastova at the China Open in Beijing on Saturday.
The time off allowed her body to mend and she returned to the sport in January 2015.
Sevastova claimed one of the biggest wins of her career as she upset eighth seed Naomi Osaka 6-4, 6-4 to reach her first ever Premier Mandatory final.
The Argentine top seed Del Potro will face either Britain's fifth seed Kyle Edmund or unseeded Nikoloz Basilashvili of Georgia.
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