'Aunt' Venus Williams gearing up for Serena's child, US Open

Venus Williams last won the US Open in 2001

Venus Williams last won the US Open in 2001

Ninth-ranked Venus advanced to the second round at the WTA Cincinnati Open by eliminating United States compatriot Alison Riske 6-2, 6-0 in 66 minutes.

Barty, from Australia, beat Williams 6-3, 2-6, 6-2.

After grabbing control of the match, the 21-year-old Barty showed plenty of poise and served out to love in the final game to close out the contest in one hour and 50 minutes.

Barty, who has moved up to No.48 in the world rankings, will now play Caroline Wozniacki in the round of 16 tonight for a place in the quarter-finals. "To play Venus on such a big stage is a privilege for me and to play as well as I did, I'm really excited", Barty said.

"It's an honour for me to. share the court with her, and happy to be moving on".

Ninth-seeded Williams, the runner-up at the Australian Open and Wimbledon this year, fell behind Barty 4-1 in the decisive set after dropping serve in the third and fifth games. "I have a lot of things in my cart that I'm about to order", she said.

Stosur had held Australia's top women's ranking for a record 442 weeks, but will find herself as the country's No.3 when she arrives in NY for the final grand slam of the year starting on August 29.

Williams, who won her 49th career WTA singles crown previous year at Kaohsiung, said she doesn't feel pressure to win the title this week.

"I just want to play free and feel confident".

Venus, who made a third-round exit in Toronto last week, said that she is determined to play freely and put her menacing best when she head into this year's final Grand Slam, beginning August 28 in NY.

Germany's Julia Goerges and Slovakian 11th seed Dominika Cibulkova also had wins.