Indian Davis Cupper Rohan Bopanna and Aisam-ul-Haq Qureshi rallied from a set down to defeat Ashutosh Singh and Purav Raja and advance to the doubles semi-finals of the US $50,000 ATP Challenger event in Korat, Thailand.

The top seeded Indo-Pak pair lost the opening set but came back well to beat the Indian pair 4-6, 6-3, 13-11 in the quarter-finals.

They will next take on the Israeli pair of Harel Levy and Noam Okun, who defeated Korean Kyu Tae IM and Thailand's Danai Udomchoke 6-2, 6-3 in their quarter-final contest.