Peter Devlin first captained a Randwick team in 1973-74, his second season in AW Green Shield. He went on to captain the side for four years ending up playing an amazing 35 matches over five seasons in Green Shield. He was also selected in the representative Combined Green Shield team.
He made his Grade debut in 1973-74 and within two seasons he was one of the better performed players in that team. In 1975-76 he had returns of 5-57 v Sydney and 7-44 the following match v Mosman. He was the leading bat with 427 in 3rd Grade in 1976-77 in a team which lost the Grand Final. Three seasons later he was the leading bowler in 2nd Grade returning 26 wickets with his right-arm medium pacers which included a 5-29 performance against NDs.