CRI听力:China's Zheng Saisai Advances in Women's Doubles at US Open

Rising Chinese star Zheng Saisai and her playing partner Vania King from the United States have made it into the second round of US Open.

They knocked out another Chinese player Xu Yifan and Zarina Diyas from Kazakhstan in a three set match.

Taiwan's Chan Chin-Wei and her partner have been bounced early from the tournament, going down to No. 5 seeds Caroline Garcia of France and Katarina Srebotnik from Slovenia in straight sets.

In women's singles, American Madison Keys has won her second round meeting with Tereza Smitkova 6-1, 6-2.

"It was amazing. I don't know if it's because of the roof now, but it didn't seem as big as I thought it was going to feel. It was amazing to play out there. You know, I thought I played pretty well, so hopefully I can have many more matches on Ashe."

The three-time defending champion Serena Williams struggled a bit early, but still managed to move a step closer to completing a calendar Grand Slam after beating Kiki Bertens 7-6, 6-3.

It's Williams' 30th consecutive victory in Grand Slam matches.

This is also her 50th match victory of the year.

Young Canadian Eugenie Bouchard appears to be shaking off some of the troubles she's been having this season, also advancing into the 3rd round after getting past Slovenian Polona Herzog in a 3-set match.

It's the first time the former world number-5 has won back-to-back matches since March.

On the men's side, defending champion Marin Cilic booked his place in the third round of the US Open with a straight sets win over Evgeny Donskoy.

The ninth seeded Croatian will next face either 17th seed Grigor Dimitrov or Mikhail Kukushkin.

Two-time US Open semi-finalist David Ferrer also went through by beating Filip Krajinovic in a three sets affair.

David Ferrer offered these thoughts on his win.

"It was tough, it was tough it was not quick. I think that I had to play better than the first day in this match. But he is not easy Krajinovic. He has good talent and finally I could win so I am happy."

Next off for him is Jeremy Chardy of France.

It's a pretty good day for Spain, as Spainiards Roberto Bautista-Agut and Feliciano Lopez also have made it through.

However, their countryman Fernando Verdasco wasn't as lucky.

He went down to 10th seeded Canadian Milos Raonic.