Andy Murray may be out but Laura Robson is keeping British interest alive at Melbourne Park as she chases glory in the girls' singles

Robson uses ice to keep her cool in her second round match against Thailand's Kanyapat Narattana - and takes the first set 6-3

Narattana takes a 5-2 lead in the second set but Robson storms back to win it in a tie-break and book her place in the last 16

France's Marion Bartoli takes an early 3-1 lead in her women's quarter-final against seventh seed Vera Zvonareva

But Zvonareva finds her form on the Rod Laver Arena, winning five games in a row to fight back and take the first set

With temperatures still soaring in Melbourne, Zvonareva elects for a complete cover-up during change-overs

And it is Bartoli who finds the extreme conditions of the afternoon sun harder to handle

Zvonareva keeps the heat on Bartoli, completing a 6-3 6-0 win without dropping another game to march into the semi-finals

Defending champion Novak Djokovic asks for quiet from the crowd on his way to taking the first set against Andy Roddick

Serve dominates but Roddick finally grabs the first break midway through the second set

Djokovic calls for the doctor at the start of the third set

Roddick takes full advantage of his opponent's problems, breaking twice to go two sets to one in front

After battling on gamely, Djokovic calls it quits when he falls a break down in the fourth set

Djokovic ends his reign as Australian Open champion as he leaves the Rod Laver Arena accompanied by the doctor

Third seed Dinara Safina faces Australian wildcard Jelena Dokic for a spot in the semi-finals and takes the opening set 6-4

Dokic battles back and takes the match to a deciding set - taking the second set 6-4 as the Russian's game tightens up

Safina digs deep to recover her composure and reaches the last four after a gruelling two hours and 17 minutes

Roger Federer cruises into a record 19th consecutive Grand Slam semi-final with a thumping 6-3 6-0 6-0 win over Juan Martin del Potro

The 20-year-old Argentine is dumped out of the Australian Open in one hour 20 minutes by the world number two