Williams sisters advance at Charleston CHARLESTON, S.C., April 3 (UPI) -- Former Charleston champions Venus and Serena Williams each advanced at the Family Circle Cup Tuesday after scoring victories. Serena Williams, the 2008 winner, pounded out 11 aces in her 6-4, 6-4 second-round triumph over Russia's Elena Vesnina. She saved 6-of-7 break opportunities in the straight-set win. Her sister, former world No. 1 Venus Williams, used six aces to notch a first-round triumph with a 6-4, 6-3 decision over Czech qualifier Iveta Benesova. Venus claimed the Family Circle title in 2004. Second-seeded Australian Samantha Stosur, who took event in 2010, advanced to the third round Tuesday after dismissing American Jamie Hampton 6-0, 7-5 in 79 minutes.