Leander Paes [ Images ] and his Australian partner Samantha Stosur [ Images ] earned a quarter-final berth at the Australian Open [ Images ] mixed doubles competition after a 6-3, 6-4 victory over South African Chris Haggard and Elini Daniilidou of Greece, in Melbourne [ Images ], on Wednesday.

The third-seeded Indo-Australian pair prevailed in just under an hour to set up a clash with

Canadian Daniel Nestor [ Images ] and Russia's [ Images ] Elena Likhovtseva, who beat the Australian team of Stephen Huss and Monique Adamczak 6-1, 6-4.

Paes and Stosur capitalized on both their break points while their opponents squandered the four they got.

Earlier in the day, Paes' former partner Mahesh Bhupathi [ Images ] bowed out of the men's doubles competition.

Bhupathi and Radek Stepanek lost in te quarter-finals to Sweden's Jonas Bjorkman [ Images ] and Max Mirnyi [ Images ] of Belarus.

The second seeded pair needed just over an hour to get the better of the Indo-Czech combination 6-3, 6-2.

Rupesh Roy enters doubles semis

In boys' doubles quarter-finals, the eighth seeded pair of Rupesh Roy of India [ Images ] and Stephen Donald of Australia [ Images ] beat top seeds Roman Jebavy of Czech Republic and Martin Klizan of Slovakia 4-6, 6-1, 7-6(5).