Luxembourg's Gilles Muller proved a stiff challenge for World No.1 Rafael Nadal, as the match was postponed due to rain after the first set was won by Nadal in a close tie-breaker.
World No. 1 Caroline Wozniacki (left) got past France's Virginie Razzano 6-1, 6-3. Wozniacki is on a quest for her first Grand Slam title.
Russia's Svetlana Kuznetsova, the 12th seed, suffered a shock defeat to Belgium's Yanina Wickmayer (in pic) in three sets.
It was a walk in the park for Venus Williams, easing past Spain's Maria Jose Martinez in straight sets.
France's Jo-Wilfried Tsonga overcame a tricky challenge from Bulgaria's Grigor Dimitrov, beating him in four sets.
Bulgaria's Tsvetana Pironkova (in pic) pulled off the biggest upset of the day, brushing aside second seed Vera Zvonareva 6-2, 6-3.
Fifth seed Maria Sharapova beat local hope Laura Robson, to reach the third round.
Spain's Feliciano Lopez (in pic) stunned former Wimbledon finalist Andy Roddick in the third round.
French Open champion Li Na of China was shown the door by Germany's Sabine Lisicki (in pic).
The elegant David Ferrer survived a tough five-setter against Ryan Harrison of the USA.
Argentina's David Nalbandian beat Austria's Andreas Haider-Maurer. Nalbandian will now face Roger Federer in the third round.
Britain's title hope Andy Murray thrilled the crowds with a 4-set victory over Ivan Ljubicic to advance into the fourth round.