Big guns advance at US Open

01 Feb 2016 | Admin Author

Former Wimbledon champion Petra Kvitova and 2009 US Open runner-up Caroline Wozniacki with stood challenges from tenacious Asian rivals to reach the second round of the US Open on Tuesday.

Czech seventh seed Kvitova fought off Japan's 92nd-ranked Misaki Doi 6-2, 3-6, 6-1.

Danish sixth seed Wozniacki dispatched 133rd-ranked Chinese qualifier Duan Ying-Ying 6-2, 7-5.

In the upset of the day - the American qualifier Victoria Duval clinched a famous 5-7, 6-4, 6-4 win over the 11th seed Samantha Stosur.

There were no problems for Novak Djokovic and Roger Federer in their first round matches.

Djokovic advanced with a 6-1, 6-2, 6-2 victory over Lithuania's Ricardas Berankis.

Federer beat Grega Zemlja of Slovenia 6-3, 6-2, 7-5