The Indian duo of Mahesh Bhupathi and Rohan Bopanna has lost the Men's Doubles title clash of the ATP World Tour Finals in London. In the final match played late last night, the fifth seeded Indian duo went down fighting to the Spanish pair of Marcel Granollers and Marc Lopez, losing in a tight three-set game, 5-7, 6-3, 3-10.Meanwhile, Serbia's World Number One Novak Djokovic has bagged the Men's Singles trophy defeating World Number Two Roger Federer of Switzerland in straight sets, 7-6, 7-5, in the final match played early this morning