Ace badminton player PV Sindhu on Saturday said that she has a strong rivalry with Saina Nehwal on the court but off the court the two talented shuttlers are friends. “Having a rivalry is not a bad thing. When you are on court you play for yourself. When we play for the country we are one team. When we play against each other we are rivals but off the court we are friends,” Sindhu said. She was speaking at the 16th edition of the Hindustan Times Leadership Summit.