Twice champion Venus Williams charged past Samantha Stosur of Australia 6-2 6-3 on Tuesday to join her sister Serena in the second round of the US Open.
Seventh-seeded Williams overpowered Stosur, whose best success has come in doubles, breaking the 24-year-old six times in the 77-minute match that opened the night programme at Arthur Ashe Stadium.
Stosur, winner of 22 career doubles titles including the 2005 US Open crown with American Lisa Raymond and this year's Wimbledon mixed doubles title with American Bob Bryan, broke in the fourth game of the second set to lead 3-1.
Venus, however, broke back in the next game and swept the final five games of the match. Fourth-seeded Serena, also a two-times Open winner, advanced with a 6-1 6-4 destruction of Kateryna Bondarenko of Ukraine.
Wimbledon champion Venus next meets qualifier Rossana De Los Rios of Paraguay, a 6-3 2-6 6-3 winner against Czech Hana Sromova.