Who's the favorite to win Istanbul?
The year-end championships promised so much.
At the start of the season, it wouldn't have been unfathomable to think that Serena Williams, Kim Clijsters and Justine Henin -- with their combined 24 major titles -- would qualify for the WTA Championships in Istanbul.
But none of the three are in Turkey, significantly lessening the star power. The lone multiple Grand Slam champion is Maria Sharapova.
What it means is that it's a wide-open tournament.
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