Ace Indian tennis player Rohan Bopanna and his Australian men's doubles partner Matthew Ebden started their ATP Finals campaign on a losing note, suffering a straight-set defeat in a group stage match. Bopanna and Ebden were defeated by the Italian duo of Simone Bolelli and Andrea Vavassori 2-6, 3-6 in just 56 minutes in Turin on Monday. The Indo-Australian pair had defeated their opponents in this year's Australian Open final. Bolelli and Vavassori, the fourth seeds, dominated from the outset, breaking their rivals in the second game.