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. P. V. Sindhu:  She is one of the two Indian badminton players to ever win an Olympic medal – other being Saina Nehwal.
i don't know