Guangzhou, China, 17 September 2019 |

A sensational serving performance from Sam Stosur sent the Australian through to the second round of the WTA Guangzhou Open on Monday night.

Stosur beat Czech qualifier Tereza Martincova 6-2 6-4 in 78 minutes, notching her 600th career win in a glittering 20-year pro career.

The 35-year-old next faces Bernarda Pera, who overcame eighth seed Ons Jabeur in straight sets.

“She’s been doing well the last couple of years on Tour and she’s a lefty. That’s not always easy for me, it’s a good challenge so looking forward to it,” Stosur told about her next match.

A wildcard entry into the main draw, Stosur lost just four points on her first serve for the entire match at a success rate of 89 per cent.

“I got off to a really good start, got used to the conditions quickly, which was good. The second set got tighter and closer, but to get through that in straight sets, I’m very, very happy,” she said.

“I don’t mind the hot and humid conditions but I’m so sweaty I need to change my clothes every 20 minutes. You can’t do that in a match so it’s a bit of a struggle. But normally in the heat I don’t mind it, so fingers crossed I can bounce back.”

Stosur, currently ranked 129th, last week reached the second round at the WTA tournament in Nanchang.