Second seeds Rohan Bopanna and Aisam-ul Haq Qureshi progressed to the quarter-finals of the St Petersburg Open after a hard-earned win over Sergiy Stakhovsky and Mikhail Youzhny.
The 'Indo-Pak Express', aiming to make the ATP World Tour finals, beat their unseeded opponents 6-2, 2-6, 10-3 in the first round of the US $663,750 hard court event.
Meanwhile, top seeds Mahesh Bhupathi and Max Mirnyi also booked a last-eight berth in the Open Sud de France with a 7-6 (3), 7-6 (3) win over Brian Battistone and Andreas Siljestrom.
They will next face Stephen Huss and Ross Hutchins in the US $650,000 event.
