Pakistan’s challenge ended at the ATP Legg Mason Classic after the opening round defeat of Aisam-ul-haq Qureshi and his Indian partner Rohan Bopanna in the doubles event.

The fourth seeded Indo-Pak pair fell 6-7(1) 7-6(6) 3-10 to the unseeded Mark Knowles of Bahamas and Xavier Malisse of Belgium after putting up a gallant fight for one hour and 47 minutes.

Somdev has already exited from the singles event following a second round defeat to Marcos Baghdatis of Cyprus.

Knowles and Malisse came into the tournament with a title win at Farmer's Classic last week. They had beaten the pair of Somdev Treat Conrad Huey of Philippines.