Serena Williams, right, shakes hands with her sister Venus Williams, left, after their semifinal match at the Family Circle Cup tennis tournament in Charleston, S.C., Saturday, April 6, 2013. Serena won 6-1, 6-2. (AP Photo/Stephen Morton)

Photo by: Stephen Morton

Serena Williams, right, shakes hands with her sister Venus Williams, left, after their semifinal match at the Family Circle Cup tennis tournament in Charleston, S.C., Saturday, April 6, 2013. Serena won 6-1, 6-2. (AP Photo/Stephen Morton)