ISLAMABAD: The Indo-Pak pair of Aisam-ul-Haq Qureshi and Rohan Bopanna stormed into semifinals with a straight-set triumph over Serbs Novak Djokovic and Viktor Troicki in the quarterfinal of the ATP BNP Paribas Open, being played in Indian Wells, California.According to a message received here on Thursday, Qureshi and Bopanna known as “IndoPak Express” triumphed 6-1 7-6 (5) over the Serbs to set up a clash with the Spanish-Canadian combination of Feliciano Lopez and Milos Raonic.The Indo-Pak pair, who stunned third seeds Leander Paes and Mahesh Bhupathi in the previous match continued their good form and raced away with the opening set quite easily after breaking Djokovic and Troicki twice.However, the second set was stiffly-contested. Both the teams held serves, failing to convert any of the break chances they earned. The issue was settled in the tie breaker in which Qureshi and Bopanna held their nerves to emerge triumphant – APP