Career
Between 1958 and 1962 Wattanasin captured the open men"s singles titles of Malaya, Ireland, Scotland, Norway, and France. He also shared the open men"s doubles titles of Malaya, Scotland, the Netherlands, and the United States of America. Wattanasin was a men"s singles runner-up to Denmark"s formidable Erland Kops at the All-England Championships in 1960 and 1962. He represented Thailand in the Thomas Cup (men"s international team) campaigns of 1957-1958 and 1963-1964.
In 2000 he was inducted into the World Badminton Hall of Fame.