A three-quarter, Murdoch earned his first Wallabies call up after a two-try man of the match performance to help the New South Wales Waratahs beat the visiting Springboks in 1993. For one of his tries, he ran 65 metres down the sideline, evading three Springbok defenders in the process.[2] He subsequently made his Test debut in Bordeaux during that year's tour of France, playing on the left wing. His only other Wallabies cap came three years later, as a winger against Wales at Ballymore, where he scored a late try in a resounding win.[3]