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 Photograph: Clive Brunskill/guardian.co.uk Venus in her "nude knickers" took the first set 6-1 ... Photograph: Mark Kolbe/Getty Images Photograph: Mark Kolbe/guardian.co.uk ... and won the second 7-6 to progress to the next round Photograph: Jason O'Brien/Action Images Photograph: Jason O'Brien/guardian.co.uk 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 Photograph: David Gray/guardian.co.uk Garbin steps into a line judge during her straight sets defeat by Azarenka Photograph: David Gray/Reuters Photograph: David Gray/guardian.co.uk 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 Photograph: Paul Miller/guardian.co.uk 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 Photograph: Mark Metcalfe/guardian.co.uk ... 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 Photograph: Jason O'Brien/guardian.co.uk 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 Photograph: Jason O'Brien/guardian.co.uk The defending champion then finished the job in the second 6-3 Photograph: Daniel Munoz/Reuters Photograph: Daniel Munoz/guardian.co.uk