![Serena Williams of America walks on the field during her first round match versus Patty Schnyder of Switzerland at the Zurich Open tennis tournament in Zurich, Switzerland, on Tuesday, October 16, 2007. Serena Williams of America walks on the field during her first round match versus Patty Schnyder of Switzerland at the Zurich Open tennis tournament in Zurich, Switzerland, on Tuesday, October 16, 2007.](https://c8.alamy.com/comp/2PB09AJ/serena-williams-of-america-walks-on-the-field-during-her-first-round-match-versus-patty-schnyder-of-switzerland-at-the-zurich-open-tennis-tournament-in-zurich-switzerland-on-tuesday-october-16-2007-williams-retired-at-a-score-of-60-30-keystoneeddy-risch-2PB09AJ.jpg)
Serena Williams of America walks on the field during her first round match versus Patty Schnyder of Switzerland at the Zurich Open tennis tournament in Zurich, Switzerland, on Tuesday, October 16, 2007.
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![Serena Williams of America plays the ball during their first round match versus Patty Schnyder of Switzerland at the Zurich Open tennis tournament in Zurich, Switzerland, on Tuesday, October 16, 2007. Williams Serena Williams of America plays the ball during their first round match versus Patty Schnyder of Switzerland at the Zurich Open tennis tournament in Zurich, Switzerland, on Tuesday, October 16, 2007. Williams](https://c8.alamy.com/comp/2PB0976/serena-williams-of-america-plays-the-ball-during-their-first-round-match-versus-patty-schnyder-of-switzerland-at-the-zurich-open-tennis-tournament-in-zurich-switzerland-on-tuesday-october-16-2007-williams-retired-at-a-score-of-60-30-keystoneeddy-risch-2PB0976.jpg)
Serena Williams of America plays the ball during their first round match versus Patty Schnyder of Switzerland at the Zurich Open tennis tournament in Zurich, Switzerland, on Tuesday, October 16, 2007. Williams
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