Williams needs to win Open to be No. 1
Here's one indication of how complicated the WTA's computer ranking system is: The WTA itself has a tough time figuring everything out.
Instead, the tour clarified, Williams could rise from No. 2 a week after the tournament ends "if [and only if]" she were to win the U.S. Open.
There has been discussion and debate about the rankings lately, because Williams has won three of the past four major championships to raise her career total to 11, while Safina is still seeking her first Grand Slam title.
Safina lost in the third round at Flushing Meadows. Williams was to play in the quarterfinals Tuesday night.
Copyright 2009 by The Associated Press
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2009 U.S. Open
Women's singles: Kim Clijsters, Belgium
Juan Martin del Potro, Argentina
Men's doubles: Lukas Dlouhy, Czech Republic and Leander Paes, India
Women's doubles: Serena and Venus Williams, United States
Mixed doubles: Carly Gullickson and Travis Parrott, United States
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