Australian Open 2011: Day four – in pictures

Andy Murray signs autographs for fans after winning his match against Illya Marchenko of Ukraine Photograph: Yuriko Nakao/Reuters

Murray in action in his second-round match Photograph: Jason O'Brien/Action Images

The Margaret Court Arena where Murray took on Marchenko Photograph: Adam Davy/EMPICS Sport

Jelena Jankovic of Serbia hits a return to Peng Shuai of China Photograph: Rob Griffith/AP

Shuai celebrates beating Jankovic Photograph: Rob Griffith/AP

Fans watch the second-round match between Jo-Wilfried Tsonga of France and Andreas Seppi of Italy
Photograph: Dennis M Sabangan/EPA

Mikhail Youzhny of Russia returns the ball to Blaz Kavcic of Slovenia Photograph: Franck Robichon/EPA

Michael Russell of the US serves to David Ferrer of Spain Photograph: Mick Tsikas/Reuters

Alizé Cornet of France returns the ball to María José Martínez Sánchez of Spain Photograph: Franck Robichon/EPA

Vera Zvonareva of Russia serves to Bojana Jovanovski of Serbia Photograph: Petar Kujundzic/Reuters

Nadia Petrova of Russia prepares to play a backhand in her second-round match against Alicia Molik Photograph: Clive Brunskill/Getty Images

On the points of his toes, Rafael Nadal of Spain serves to Ryan Sweeting Photograph: Barbara Walton/EPA

Nadal serves to Sweeting during their second-round match Photograph: Barbara Walton/EPA

The outstretched hand of Nadal Photograph: Barbara Walton/EPA

Sweeting shows some aggression against Nadal Photograph: Barbara Walton/EPA

Ross Hutchins and Colin Fleming of Great Britain take on Jonathan Elrich and Andy Ram of Israel in the first round of the doubles Photograph: Julian Finney/Getty Images