Sachin Nag was a prominent Indian swimmer and water polo player, best known for his pioneering contributions to Indian sports in the postindependence era. He distinguished himself as the first Indian to captain the national swimming team at the 1948 London Olympics, marking a significant moment in the country's sporting history. Beyond his leadership role, Nag was a versatile athlete, excelling in various swimming disciplines, including freestyle and backstroke. He showcased his skills at multiple national and international competitions, consistently representing India with dedication and sportsmanship.

Nag's achievements extended beyond the pool, as he also made notable contributions to water polo. He represented India in water polo at the Olympics and Asian Games, further demonstrating his allaround athletic prowess. His commitment to both swimming and water polo highlighted his versatility and passion for aquatic sports. While specific details about his early life and later career remain less widely documented, Sachin Nag's legacy is firmly cemented as a trailblazer in Indian swimming and water polo. He inspired generations of athletes with his dedication, leadership, and representation of India on the international stage. His contribution to the development of aquatic sports in India is undeniable, making him a respected figure in the nation's sporting heritage.