Top seed Jelena Jankovic begins to feel the heat as her second serve deserts her against Marion Bartoli

Jankovic cuts a forlorn figure in the harsh Melbourne sunlight as Bartoli produces a stunning fourth-round upset

Bartoli is overcome with delight as she sends down a final winner to vanquish Jankovic on Rod Laver Arena

Juan Martin Del Potro basks in the adulation of the Hisense Arena following his testing victory over Croatia's Marin Cilic

Perennial joker Henri Leconte larks about with Mark Philippoussis, Todd Woodbridge and Mark Woodforde in a "legends" match

Dinara Safina dispenses with her racquet as the volatile Russian third seed appears en route to an early exit from the Australian Open

A disbelieving Alize Cornet slumps to the ground as she squanders two match points to suffer an incredible loss against Safina

Safina herself can barely believe her victory, having broken a racquet in frustration and veered within a whisker of crashing out

Roger Federer leaves himself plenty to contemplate as the former world number one drops two sets on 20th seed Tomas Berdych

But as the third set gets under way, an increasingly worried Berdych sees Federer wrestle the match from his grasp

While Federer and Berdych slog it out on Rod Laver Arena, Zheng Jie takes time out to explore Melbourne by water taxi

Back on court, a tired Berdych takes time out for medical treatment on a thigh problem, then re-emerges with forehand guns blazing

Federer lets out a howl of relief as his ace puts paid to Berdych at the end of the fifth and deciding set

Born-again Aussie Jelena Dokic delights the home fans by taking the first set against Russia's Alisa Kleybanova

But 29th seed Kleybanova, who ousted fifth-ranked Anna Ivanovic in the third round, fights back to take the second

Dokic keeps her eye on the ball as she digs deep and overcomes an ankle injury scare to secure a 7-5 5-7 8-6 victory

With his match against Marcos Baghdatis starting late, third seed Novak Djokovic is no mood to hang around, winning the first set 6-1

Baghdatis takes the second set to a tiebreak, but the unseeded Cypriot lets it slip 7-1 to Serbia's 2008 Australian Open winner

The third set also goes to a tiebreak, but this time it's 2006 Melbourne runner-up Bagdhatis who clinches it, to Djokovic's disbelief

Djokovic somehow finds another gear in the fourth set to finally clinch a 6-1 7-6 (7-1) 6-7 6-2 win at 0230 local time. Time for bed...