Venus Williams continues her bid for a first Australian Open title as she takes on China's Li Na in Wednesday's opening match on Rod Laver Arena
Li Na is playing in only her second Grand Slam quarter-final, and first since 2006, and she looks nervous as the first goes quickly to her opponent
Li battles back in the second set, forcing a tie-break which she wins to level at one set all
Venus cannot find her game as her serve is repeatedly broken in a topsy turvy final set
Li celebrates a historic achievement for China as she joins Jie Zheng in the semis with a 2-6 7-6 (7-4) 7-5 victory over the sixth seed
Seventh seed Victoria Azarenka makes a blistering start to the last of the women's quarter-finals against Serena Williams
Serena is in the unusual position of being overpowered as Azarenka storms a set and 4-0 in front
But Williams shows all the fighting qualities of a champion as she reels off five straight games to get right back in contention
Azarenka is unable to contain the American and drops serve early in the final set
Serena completes a 4-6 7-6 (7-4) 6-2 victory to set up a semi-final against Li Na
Britain's Peter Norfolk beats American Nick Taylor 6-0 6-0 in the third round of the Quad Wheelchair singles
Number one seed Roger Federer takes to the Rod Laver Arena to take on Nikolay Davydenko for a place in the semi-finals
But Russian stalwart Davydenko springs a surprise by taking the opening set 6-2 in 34 minutes
Federer's blistering forehand soon brings him back into the match and he takes the next 6-3 before storming through the third set to love in just 24 minutes
Federer duly completes a 2-6 6-3 6-0 7-5 win to reach his 23rd consecutive Grand Slam semi-final and tells hirsute former world number one Jim Courier how the sun got in his (Federer's) eyes in the first set
Having reached the quarter-finals of the juniors, 16-year-old Briton Laura Robson hoped to reach the last four of the doubles with new partner Sally Peers but bows out 6-4 6-1 to Maria Kirilenko and Agnieszka Radwanska
Powerful Frenchman Jo-Wilfried Tsonga fights back from 2-1 down against third seed Novak Djokovic
Jubilation for Tsonga as he completes a gruelling 7-6 (8-6) 6-7 (5-7) 1-6 6-3 6-1 victory in close to four hours, setting up a semi-final with top seed Roger Federer
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