Three former women's champions remain in the Wimbledon main draw, with Petra Kvitova overcoming a nervous start against Akgul Amanmuradova while Serena Williams progressed 6-4, 6-2 against Barbora Zahlavova Strycova . Maria Sharapova, the 2004 champ and current world No. 1, was a straight sets winner over Anastasia Rodionova yesterday.
