P. V. Sindhu and Saina Nehwal are the only two Indian athletes to win an Olympic medal in which sport?
P. V. Sindhu: Pusarla Venkata Sindhu (born 5 July 1995) is an Indian professional badminton player, who is currently world no 2 in the BWF World Ranking. Saina Nehwal: Saina Nehwal (   ; born 17 March 1990) is an Indian professional badminton singles player.
i don't know