Leander Paes and his Czech partner Lukas Dlouhy notched up a straight-set victory to storm into the quarterfinals of the men's doubles event.

The third seeded Indo-Czech pair beat Americans John Isner and Sam Querrey 6-3 7-5 to book their place in the last eight stage.

Paes-Dlouhy will next play the winners of the match between fifth seeded Polish-Austrian combination of Lukasz Kubot and Oliver Marach and Ivo Karlovic of Croatia and Serbian Dusan Vemic.

The next match, in the mixed doubles category, as top seed with partner Cara Black, was hardly a trouble as they easily shut out Akgul Amanmuradova and Rik De Voest in straight sets.

The Indo-Zimbabwean pair beat the Uzbek-South African pair 6-4 6-2 in the second round of the mixed doubles event.

In the junior event, Vaidik Munshaw's campaign was over as he lost boys' doubles first round along with Chinese partner Chuhan Wang.

They were humbled 2-6 6-7(3) by fourth seeds Liang-Chi Huang of Taipei and Yasutaka Uchiyama of Japan.