The man known as 'Flash' was renowned for his overlapping runs, and his enormous stamina.
Born and bred in Newcastle, surprisingly his big break didn't come with his hometown club, KB United, but with Sydney Olympic, who gave him his opportunity in 1979.
Jennings began his NSL career as a winger, but when Manfred Schaefer joined Olympic as coach he converted him to a fullback - a move which defined his career.
He made his Socceroos debut under Frank Arok against England in 1983, and became a mainstay at left back over the 1985 and 1989 World Cup campaigns - despite his fear of flying.
'Flash' had a 20 year playing career, which included stints at NSL clubs Sydney Croatia, APIA Leichhardt and Newcastle Breakers.
Quick and adventurous, and with a soft first touch, he was the epitome of a modern fullback.