Tennis: day six of the Australian Open

The unmistakable Venus Williams took to the court to play the Australian Casey Dellacqua in the third round
Photograph: Clive Brunskill/Getty Images

Venus in her "nude knickers" took the first set 6-1 ...
Photograph: Mark Kolbe/Getty Images

... and won the second 7-6 to progress to the next round
Photograph: Jason O'Brien/Action Images

The court is dried during a rain delay prior to the match between Italy's Tathiana Garbin of Italy and Victoria Azarenka of Belarus
Photograph: David Gray/REUTERS

Garbin steps into a line judge during her straight sets defeat by Azarenka
Photograph: David Gray/Reuters

Roger Federer serves to Albert Montañés of Spain in their round three match. Federer moved easily into the last sixteen with a 6-3, 6-4, 6-4 victory
Photograph: Paul Miller/EPA

Australia's Lleyton Hewitt concentrates between points in his match against Marcos Baghdatis of Cyprus. Hewitt stormed the first set 6-0 ...
Photograph: Mark Metcalfe/Getty Images

... and was well on his way to winning the second set when Baghdatis retired through injury with the score at 4-2
Photograph: Jason O'Brien/Action Images

The No1 seed Serena Williams took on Carla Suárez Navarro. Despite a tumble Serena blew away the Spaniard 6-0 in the first set
Photograph: Jason O'Brien/Action Images

The defending champion then finished the job in the second 6-3
Photograph: Daniel Munoz/Reuters