New York:Flavia Pennetta became the first woman to advance to the fourth round at this year's US Open, beating Aleksandra Wozniak of Canada 6-1, 6-1 on Friday.
The 10th-seeded Italian next plays either Vera Zvonareva and Elena Vesnina.
Pennetta was in control throughout against Wozniak, finishing with 13 winners to three for the Canadian.
Pennetta has lost just six games while sweeping six sets through three rounds at Flushing Meadows. She had her best Grand Slam result in New York last year, losing in the quarterfinals.