"As far as I am concerned I am always ready to play for the nation. If the call comes that I am needed for the Serbian tie and if the role needed is that of a player, or that of a captain, I would put my best foot forward.""The call has to come from AITA that I am needed and I would offer my best for India. AITA runs tennis in India and If they feel that my presence would make a difference, I am there to be with the team in the tie against Serbia at home,"Paes said.