Spectators endure the unfamiliar experience of a rain delay at the start of day six in Melbourne

The retractable roof covers Vodafone Arena as second seed Svetlana Kuznetsova faces Agnieszka Radwanska

And Radwanska proves the stronger in a scrappy encounter, causing a major upset with a 6-3 6-4 victory

Anna Chakvetadze makes a strong start but Maria Kirilenko battles back to reaches the last 16 of a Grand Slam for the first time

Fernando Gonzalez is not pleased at dropping the opening set to Marin Cilic and takes it out on his racket

Cilic shows no nerves at all as he clinically finishes off Gonzalez 6-2 6-7 (4-7) 6-3 6-1 for a landmark win

James Blake is ecstatic after winning from two sets down for the first time in his career, beating Sebastien Grosjean

World number three Ana Ivanovic reaches the second week with a straightforward win over Katerina Srebotnik

Tough man Janko Tipsarevic is all smiles as he takes a two-sets-to-one lead over top seed Roger Federer

Federer, going for a third straight title in Melbourne, thinks hard as he faces the prospect of going the distance

Relief for Federer as he takes four hours, 27 minutes to beat Tipsarevic and stay on track for a 13th Grand Slam crown

Eighth seed Venus Williams struggles early on against India's Sania Mirza, who makes a flying start to go a break up

But 2003 finalist Williams breaks back and breezes through the tie-break to leave 31st seed Mirza deflated

Williams breaks in game seven of the second set and has few other problems as she progresses to the last 16

With the action continuing deep into the night, it's getting a bit too much for one ballgirl

Marcos Baghdatis starts his match against Leyton Hewitt at 2350 local time and hurts his ankle in the third set

Leyton Hewitt takes a two sets to one lead and is 5-1 up in the fourth before the 15th seed forces and wins a tie-break

After four hours and 45 minutes, Hewitt and Baghdatis embrace and the Australian progresses to the final 16