Australian Open 2011: Day One – in pictures

Tennis fans soak up the atmosphere as they arrive for day one of the 2011 Australian Open at Melbourne Park Photograph: Scott Barbour/Getty Images

Andy Murray plays a backhand during a practice session Photograph: Lucas Dawson/Getty Images

Murray signs autographs for fans Photograph: Lucas Dawson/Getty Images

Anna Keothavong keeps focused during the change of ends in her match against Arina Rodionova Photograph: PA Wire/PA

A ball boy wipes the court of the Hisense Arena after light rain interrupted a first-round match Photograph: Franck Robichon/EPA

Elena Baltacha serves in her first round match against Jamie Hampton of the US Photograph: Clive Brunskill/Getty Images

Gaël Monfils of France plays a stroke during his singles match against Thiemo De Bakker of the Netherlands Photograph: William West/AFP/Getty Images

Keothavong in action during her first-round victory Photograph: PA Wire/PA

Novak Djokovic of Serbia returns to Marcel Granollers of Spain Photograph: Greg Wood/AFP/Getty Images

Switzerland's Roger Federer on his way to defeating Slovakia's Lukas Lacko in straight sets Photograph: Adam Davy/EMPICS Sport

Russia's Maria Sharapova sends down a serve Photograph: Jason O'Brien/Action Images

Spain's Fernando Verdasco makes a forehand return to Germany's Rainer Schüttler Photograph: Andrew Brownbill/AP

Venus Williams of the US returns during her victory over Sara Errani of Italy Photograph: David Crosling/EPA