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.
(Published 25 January 2010, 05:06 IST)
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