Williams injures ankle in win at Brisbane

By JOHN PYE | January 4, 2012 | 1:02 AM EST

Sam Stosur of Australia pulls a towel over her head after she lost the 1st set in her match against Iveta Benesova of the Czech Republic during the Brisbane International tennis tournament in Brisbane, Australia, Wednesday, Jan. 4, 2012. (AP Photo/Tertius Pickard)

BRISBANE, Australia (AP) — Serena Williams injured her left ankle at the Brisbane International, and it could be a major setback for her Australian Open preparations.

Williams, in her first trip Down Under since winning the 2010 Australian Open title, is playing a tournament for the first time since losing last year's U.S. Open final.

She was serving for the match with a 6-2, 5-3 lead against Serbia's Bojana Jovanovski on Wednesday when she twisted the ankle, falling to the court on the baseline.

She needed treatment and had the ankle re-taped before losing the next point to surrender a service break. Williams limped through the next game, wincing in pain at times, before securing a 6-2, 6-4 win to advance to quarterfinals.