Lawn tennis is another game where we are nowhere in the singles tournaments. But Ramanathan Krishnan actually reached the semis of the 1960 Wimbledon and repeated that feat in 1961.
In the amateur era, Roy Emerson had 12 singles Grand Slam titles. Ramanathan managed to beat him in Wimbledon. Rod Laver had a career Grand Slam in both the amateur era and Open Era. Ramanathan beat him in the Davis Cup.