Serena Williams, right, and her sister Venus, left, speak during a news conference after leading a workshop at the Arthur Ashe Tennis Centre in Soweto, South Africa on Saturday Nov. 3, 2012. (AP Photo/Themba Hadebe)

Associated Press
Serena Williams, right, and her sister Venus, left, speak during a news conference after leading a workshop at the Arthur Ashe Tennis Centre in Soweto, South Africa on Saturday Nov. 3, 2012. (AP Photo/Themba Hadebe)
Serena Williams, right, and her sister Venus, left, speak during a news conference after leading a workshop at the Arthur Ashe Tennis Centre in Soweto, South Africa on Saturday Nov. 3, 2012. (AP Photo/Themba Hadebe)
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