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Sarah Ivey, Associated Press
Serena Williams of the US answers questions during a press conference at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 14, 2012.

MELBOURNE, Australia — Serena Williams knows better than most what it takes to win a Grand Slam title without the smoothest of preparation.

The 13-time Grand Slam champion approaches the Australian Open beginning Monday still troubled by a sprained left ankle that needs regular ice treatment. It means she has played two competitive matches — at the Brisbane International — since losing the U.S. Open final in September.

She doesn't consider that a problem, telling a news conference on Saturday that "Two is plenty for me, for sure."