In 1966, he earned the accolade of being the fastest man in Asia by winning three gold medals at the Bangkok Asian Games in the 100 m, 200 m and 4 × 100 m Men's Relay events.
At the Kingston Commonwealth Games in 1966, Dr Jega became the first Malaysian to qualify for the final of the 220-yard (now the 200 m) race.
Dr Jegathesan was not only an accomplished athlete, doctor and researcher, but held important responsibilities as Chairman of the Commonwealth Games Federation (CGF) Medical Commission and honorary Medical Advisor for the 2006 Melbourne Commonwealth Games.
In an interview with the New Straits Times, Dr Jega said it was a great honour, to serve his country.
"But in whatever capacity, being part of the Commonwealth Games in itself keeps the adrenaline pumping as it brings back fond memories," he said.