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Somdev and Huey upstaged 14th seeds Argentines Juan Ignacio Chela and Eduardo Schwank 6-3 6-4 in a battle that lasted for an hour and six minutes.
Somdev and Treat hit three aces and broke their rivals twice, even as the Argentines squandered their three chances.
Fourth seeds Paes and Bhupathi beat German Florian Mayer and Rogier Wassen of the Netherlands 7-6 (5) 6-2 in an 85-minute second-round clash here.
Paes and Bhupathi stumbled to a lot of unforced errors but the Indian pair made it up by sending down five aces and besides breaking their rivals thrice.
Earlier, fifth seeded Indo-Pak pair of Rohan Bopanna and Aisam-Ul-Haq Qureshi beat American James Cerretani and Philipp Marx of Germany 7-6 (3) 7-6 (4) in a match that lasted for one hour and 39 minutes here.
Bopanna and Qureshi will take on Paul Hanley of Australia and Belgium`s Dick Norman in the quarterfinals