WASHINGTON, March 24 -- China's Zheng Jie was ousted by Australian Roland Garros finalist Samantha Stosur 6-2, 6-1 in the second round of the WTA and ATP Miami Masters on Thursday.

Stosur, the fourth seed and ranked fifth in the world, has played the Miami quarterfinals for the past two editions, losing to the eventual champions on both occasions, Victoria Azarenka in 2009 and Kim Clijsters last year.

The Australian took just 58 minutes to advance as she never faced a break point but broke her Chinese opponent's serve on six of a dozen chances.

"I thought I played quite well," Stosur said. "I don't think I hit the ball out of this world fantastic, but I guess I did what I had to do.

"Against a player like Zheng, you want to be able to do that from start to finish. She always competes hard for every single point. I served really well today, which also helped me get through."

Stosur next plays Lucie Safarova, who beat Swiss veteran Patty Schnyder 6-2, 6-4.

The loss was the fifth for Zheng this season, with the Chinese player managing only two wins.

Danish top seed Caroline Wozniacki opened with a 6-2, 7-5 victory over American Bethanie Mattek-Sands while Serb sixth seed Jelena Jankovic defeated Romanian Monica Niculescu 6-3, 6-1, in other second-round matches.

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