CHARLESTON, S.C. -- Venus Williams can't remember the last time she took on younger sister Serena on the tennis court. Their next meeting may not be too far off.
Venus and Serena both reached the quarterfinals of the Family Circle Cup on Thursday with straight-set victories. Venus defeated Anastasia Rodionova, 7-5, 6-2, on center court shortly after Serena ousted Marina Erakovic, 6-2, 6-2. Should the sisters win on Friday, it would set up a Saturday showdown in the semifinals.
"If we both get to the semifinal," Venus said, "I guess the best Williams will win."
Most times, that's been Serena, who holds a 13-10 edge in the family rivalry -- although the two haven't faced each other since Serena took the title at the 2009 WTA Championships in Qatar. Serena holds a 7-5 advantage over her older sister at grand slam events and has won six of the eight times the two have played with a major title on the line.
Serena also wasn't yet prepping to face the player on tour she knows the best, although she was rooting for the matchup.
"I have to win another match," Serena said. "I really hope we both get there, so we'll see."
Serena Williams, ranked 10th in the world, might have the easier time of it. She'll go up against 2009 Family Circle winner Sabine Lisicki, who stands 13th in the WTA rankings. The last time the two met, Williams won on the way to the Bank of the West title last summer.
"It can only get better," said Lisicki, the tournament's sixth seed.
Venus, who is ranked at No. 87, hadn't played in more than six months until last week's Sony Ericsson Open due to complications from Sjogren's syndrome, an autoimmune disorder. She could face the Family Circle's No. 2 seed and reigning U.S. Open champion Samantha Stosur.
Stosur's match with Galina Voskoboeva on Thursday night was suspended until Friday when thunderstorms hit the tennis center. Stosur was ahead 4-2 in the first set.
Other winners Thursday included No. 4 seed Vera Zvonereva, No. 9 seed Lucie Safarova and No. 13 Nadia Petrova. Third-seeded Marion Bartoli fell to the 14th seed, Polona Hercog, who overcame a 4-2 deficit in the third set to advance.
The Williams sisters are each playing well enough to win their first clay-court event of the season. Venus, the 2004 champion here, has dropped only one set in three matches and has reached the final eight in both tournaments she's played since returning from injury.
Serena won both her matches in straight sets and has gotten stronger since the week began, and that was certainly the case in her first meeting with Erakovic.
Williams and Erakovic traded ground strokes early on, with the 24-year-old New Zealander prevailing in a game that took nearly 15 minutes to play and left the first set tied at 2.
Williams, annoyed she played through seven deuces and still lost, then cranked it up and won the final four games of the set.
Erakovic was overmatched the rest of the way, often watching from the baseline as Williams' shots flew past for winners. At one point, Williams swung and missed as Erakovic's lob shot flew over, yet caught up with the ball moments later on the bounce and flipped it over the net for a winner. Williams switched sides with a huge grin on her face.
"I'm really excited to be playing some matches here because it really gives you confidence in the things that you want to work on, not just for today and tomorrow, but the rest of the clay-court season," Williams said.