World number 1 Lindsay Davenport cruised into the second round of the Australian Open with an efficient 6-2, 6-1 win over Australian Casey Dellacqua on Monday.

Davenport, runner-up in Melbourne in 2005, broke Dellacqua's service twice in each set to close out her first match in 57 minutes in oppressive conditions at Melbourne Park.

The tall American dominated the match with a strong service game and then blasted an overhead smash past the outclassed Australian wild card entrant on the final point at the Rod Laver Arena.

Top seed Davenport, who was beaten in the 2005 final by Serena Williams, remains on course for a quarter-final meeting with 10th seed Venus Williams or eighth seed Justine Henin-Hardenne of Belgium.

Results from the women's singles Round 1 matches:

Elena Vesnina (Russia) beat Ting Li (China) 6-2, 6-3

Laura Granville (United States) beat Kathrin Woerle (Germany) 5-7, 6-2, 6-0

Tszvetana Pironkova (Bulgaria) beat 10-Venus Williams (United States) 2-6, 6-0 9-7

25-Maria Kirilenko (Russia) beat Evgenia Linetskaya (Russia) 6-1, 3-1 (Linetskaya retired)

23-Jelena Jankovic (Serbia and Montenegro) beat Jill Craybas (United States) 6-2, 4-6, 6-4

Olga Savchuk (Ukraine) beat Tzipora Obziler (Israel) 6-1, 3-6, 6-4

Katarina Srebotnik (Slovenia) beat Stephanie Foretz (France) 6-4, 6-3

Virginie Razzano (France) beat Jelena Dokic (Australia) 3-6, 7-6(6), 6-1

6-Nadia Petrova (Russia) beat Sophie Ferguson (Australia) 6-2, 6-1

Mara Santangelo (Italy) beat 24-Tatiana Golovin (France) 6-4, 4-6, 6-4

Conchita Martinez Granados (Spain) beat 26-Ai Sugiyama (Japan) 6-4, 6-3

17-Daniela Hantuchova (Slovakia) beat Saori Obata (Japan) 3-6, 6-3, 6-0

Martina Mueller (Germany) beat Jarmila Gajdosova (Slovakia) 1-6, 6-2, 6-3

Karolina Sprem (Croatia) beat Alona Bondarenko (Ukraine) 6-4, 6-2

Akgul Amanmuradova (Uzbekistan) beat Dally Randriantefy (Madagascar) 6-3, 2-6, 6-1

Julia Schruff (Germany) beat 9-Elena Dementieva (Russia) 7-5, 6-2

Hana Sromova (Czech Republic) beat Akiko Morigami (Japan) 3-0 (Morigami retired)

1-Lindsay Davenport (United States) beat Casey Dell'Acqua (Australia) 6-2, 6-1