Top seeds India's Rohan Bopanna and his Pakistani partner Aisam-ul Haq Qureshi hoping to capture a second ATP World Tour team title and improve their chances of qualifying for the ATP World Tour Finals, went down to Serbians Janko Tipsarevic and Viktor Troicki 4-6, 5-7 in the quarter-finals of the $1,000,000 Kremlin Cup tennis tournament on Friday