Serena Williams continued her dominance of women's tennis on Saturday, beating nearest challenger Victoria Azarenka in straight sets to win the Brisbane International final.

In an match-up between the top two players in the world, the first set proved a close affair with only one break point, which Williams converted.

The pair then exchanged several breaks in a topsy-turvy second set but the American made her move when it counted most to wrap up a 6-4 7-5 victory in one hour and 38 minutes.

Williams has now won 58 tour singles titles and will go into the Australian Open, which starts on 13 January, defending a 22-match winning run.

And the world number one thinks this week in Brisbane, including wins over Azarenka and Maria Sharapova, has been perfect preparation for Melbourne.

"I feel like I'm being pushed into the deep end straightaway," Williams said.

"I think it's a good thing. In Melbourne if I have to face Maria again I'll know a little bit more what to expect, and same thing with Victoria.

"If I happen to play her in Melbourne, I'll know what to do and what to expect."