Sydney:Top-seeded Serena Williams and second-seeded Dinara Safina both made short work of their second-round opponents on Tuesday to move into the quarterfinals at the Sydney International.
Williams, who was stretched to three sets and saved four match points in her opening match against Samantha Stosur of Australia, beat Sara Errani of Italy 6-1, 6-2 in 50 minutes Tuesday.
Her win at Ken Rosewall Arena, the center court at the Olympic Park Tennis Centre, came moments after Safina finished off a 6-3, 6-0 win over fellow Russian Vera Dushevina in just over an hour on Court 1.
Three other seeded players in the women's draw at the joint ATP-WTA tournament also advanced Tuesday.
No. 3 Elena Dementieva of Russia beat Jarmila Gajdosova of Slovakia 6-2, 6-4, No. 6 Agnieszka Radwanska of Poland defeated Slovakia's Daniela Hantuchova 6-3, 7-5 and Caroline Wozniacki of Denmark, the eighth-seeded player, beat Britain's Melanie South 6-2, 6-0.
In another match, Japan's Ai Sugiyama beat Anabel Medina Garrigues of Spain 2-6, 6-1, 6-2.
In early first-round men's play, Paul-Henri Mathieu of France beat Italian Andreas Seppi 6-2, 2-6, 6-3.
Eighth-seeded Mardy Fish of the United States played Janko Tipsarevic of Serbia and former No. 1 Lleyton Hewitt of Australia played Frenchman Julien Benneteau in later men's matches.
The top four men's seeds - Novak Djokovic, Gilles Simon, Jo-Wilfried Tsonga and David Nalbandian - received first-round byes. Djokovic, who begins the defense of his Australian Open title next week in Melbourne, plays Mathieu on Wednesday.