Nandu Natekar won the men’s singles championship in the Selangor International Tournament in Kuala Lumpur in 1956. Natekar’s victory was also the first international victory by an Indian Badminton player.
source https://www.jagranjosh.com/current-affairs/nandu-natekar-indian-badminton-legend-passes-away-at-88-1627463325-1