The young US Open champion, World No.5 Bianca Andreescu sealed her first victory at China Open after second-set struggle, while Chinese player Zhang Zhizhen marked his first China Open win in men's singles to advance to the second round.

Canadian star Bianca Andreescu got her first China Open off to a winning start, taking down Belarusian Aliaksandra Sasnovich 6-2, 2-6, 6-1 and continuing her 14th win in a row since the Rogers Cup in August.

Up next for the 19-year-old will be her US Open quarterfinal rival Elise Mertens, who knocked out Croatian Petra Martic 6-2, 6-3.

"I was a little bit nervous before the match. I just tried to have the same mindset as I do in all of my matches. I wanted to just keep the momentum going. Hopefully I can just keep it up because I think it gives me a lot of confidence", she said.

Wildcard player Zhang notched triumph over World No. 34 Kyle Edmund of Britain 6-4, 3-6, 7-6 (5) and became the second Chinese player to win a home game at China Open after Zhang Ze's win in 2017.

"I didn't think too much. It went very well in the first set," he said after the match. "Edmund did very well with his serve in the second set. I didn't have any breakpoints. The third set was tight, I tried to be more aggressive. Luckily I won the match."

Round of 32 action continues tomorrow.

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