[1] During his university years, he formed a formidable rivalry and duels with John de Saram in the track and field discipline participating in categories of 100m, 200m and 400m.
[2] The closely fought contests in relevant categories between the duo drew widespread attention from all quarters and their tense rivalry also brought in huge crowds.
[2] More importantly, Oscar Wijesinghe was a Thomian whereas John de Saram was a Royalist which eventually created a lot of buzz and hype among public, while also taking their old-aged popular school rivalry (St Thomas College and Royal College) to the next level stepping into university days and the level of expectations grew exponentially among the fans whenever both of them competed during their university days.
[3] He teamed up with fellow prominent track and field athletes Duncan White, John de Saram and Summa Navaratnam in the men's 4 × 110 yards event where Sri Lanka finished in fourth position during the 1950 British Empire Games.
[5][6][7] After his stellar illustrious sporting career, he left Sri Lanka and migrated to permanently settle in the United States of America along with his wife Barbara.