Wimbledon champion Serena Williams has blasted her way into the quarter-finals of the Olympic women's singles by beating Vera Zvonereva in under an hour.
Russian Zvonereva got off to the worst possible start by losing her serve to-15 under the Centre Court roof before Williams raced to the opening set 6-1 with two further breaks.
The American didn't let up in the second and continued a run of successive games against the 13th seed, eventually racking up 10 in a row to take the second set to-love and seal the match in just 52 minutes.
Williams will take on either Slovakia's Daniela Hantuchova or Caroline Wozniacki of Denmark in the last eight at the Games.
Germany
Switzerland
Hungary
Scotland
