Wimbledon Day 7

China's Zheng Jie serves to Hungary's Agnes Szavay, during their Women's Singles, fourth round match at Wimbledon.

Bec Cartwright, wife of Australia's Lleyton Hewitt arrives onto the Centre Court to watch her husband's fourth round match against Switzerland's Rogerer Federer at Wimbledon.

Venus Williams of the US in action during her fourth round match against Russia's Alisa Kleybanova at Wimbledon.

Switzerland's Roger Federer in action during his fourth round match against Australia's Lleyton Hewitt on the Centre Court at Wimbledon.

Serena Williams returns to compatriot Bethanie Mattek, during their Women's Singles, fourth round match at Wimbledon.

Thailand's Tamarine Tanasugarn reacts as she defeats Serbia's Jelena Jankovich, the number two seed, in their Women's Singles, fourth round match at Wimbledon.

China's Zheng Jie celebrates after her fourth round match against Hungary's Agnes Szavay at Wimbledon.

Croatia's Mario Ancic falls to his knees after defeating Spain's Fernando Verdasco in their Men's Singles, fourth round match at Wimbledon.

Rafael Nadal of Spain in action during his fourth round match against Russia's Mikhail Youzhny at Wimbledon.

Russia's Svetlana Kuznetsova eyes the ball during her Women's Singles, first round match against Poland's Agnieszka Radwanska, on the Centre Court at Wimbledon.