Ramanathan Krishnan was a prominent figure in Indian tennis, widely regarded as one of the nation's greatest players. Born in Madras (now Chennai), India, Krishnan's journey in tennis began at a young age, nurtured by his father, T.K. Ramanathan, who was also a tennis player. Krishnan quickly rose through the ranks, showcasing exceptional talent and a graceful playing style characterized by his elegant shotmaking and tactical prowess. He achieved significant success on the international stage, particularly during the 1950s and 1960s. His most notable accomplishments include reaching the Wimbledon semifinals twice, in 1960 and 1961, a feat that solidified his status as a worldclass player. He was the first Indian to achieve this distinction in the postWorld War II era.

Beyond his individual achievements, Krishnan played a pivotal role in India's Davis Cup campaigns. He was a key member of the Indian team that reached the Davis Cup Challenge Round in 1966, a remarkable achievement for Indian tennis. His contributions to the Davis Cup were immense, both as a player and later as a captain. Krishnan's success inspired a generation of Indian tennis players and helped popularize the sport in the country. He was known for his sportsmanship and humility, making him a respected figure both on and off the court. Following his retirement from professional tennis, Krishnan remained involved in the sport, serving as a coach and mentor to aspiring players. His legacy as a tennis icon in India remains strong, and he is remembered for his outstanding achievements and his contribution to the growth of tennis in the nation.