Indian Davis Cuppers Somdev Devvarman [ Images ] and Rohan Bopanna [ Images ] advanced to doubles quarter-finals in different ATP Challenger events after hard-earned victories.

Somdev and his American partner Ryan Harrison overcame the challenge of local pair Ilija Cuic and Kresimir Ritz 7-6(3), 6-2 in the first round of the US $50,000 Zagreb event in Croatia [ Images ].

In singles, Somdev is up against Yuri Schukin of Kazakhstan. However, US-based Indian Prakash Amritraj [ Images ] crashed out in the first round itself, losing 3-6, 1-6 to Ruben Ramirez Hidalgo of Spain.

In the Bordeaux event in France [ Images ], Bopanna and his Pakistani partner Aisam-ul-Haq Qureshi [ Images ], seeded fourth, beat local wild cards Adrian Mannarino and Xavier Pujo 7-6(4), 6-2 in the opening round of the euro 85,000 clay-court tournament.