Navaratnam established himself as a reputed prominent distinguished sportsman at the
Royal College in
Colombo where he pursued his primary and secondary education. He gained attention as a school athlete at Royal College at the age of fifteen when he became the youngest Royalist to be awarded the Royal College athletics colours. He also went on to captain the Royal College rugby and athletics teams. He was also slated to compete in the
men's 200 yards event but he did not start and was disqualified. He teamed up with fellow prominent track and field athletes
Duncan White,
John de Saram and
Oscar Wijesinghe in the
men's 4 × 110 yards event where Sri Lanka finished in fourth position during the 1950 British Empire Games. Navaratnam was fondly called "the fastest man in Asia" after clocking at record 10.4 seconds at the India States Olympic Meet which was held in Madras in 1953. It was also regarded as the fastest timing recorded on a grass track on Asian soil. He began his athletics coaching career with Royal College in 1953. He retired from athletics in 1955 and pursued his career as a professional rugby player. Navaratnam was part of the Ceylon rugby team which played in an unofficial match against the touring
British Lions in
1950 where the British Lions defeated Sri Lanka 44–6. He was just one of three local native Sri Lankans along with
Leslie Ephraims and
Clair Roeloffsz to have been selected to play for the Ceylonese rugby team which was otherwise dubbed as an "all-white" Sri Lankan team. He also captained the
Ceylonese Rugby & Football Club and under his captaincy CR & FC won the
Clifford Cup in 1954. Navaratnam was elected as the president of the Ceylon Rugby Football Union in 1972 and was re-elected as the president of the
Sri Lanka Rugby Football Union in 1974. Navaratnam pursued a mercantile career as a junior trading executive of Dodwell & Company in Colombo. After the closure of Dodwell, he joined the Stores & Sales Department of Colombo Commercial Company. On his return to Sri Lanka in around 1989, he became general manager of Consolexpo corporation where he served for three years. He became general manager at the Ceylon and Foreign Trades PLC in 1993 and served in the position for about 16 years before his retirement in 2009. He was also appointed to the board of Ceylon and Foreign Trades and its subsidiaries. == References ==