As a forward with considerable speed and goal sense, Antrobus first played for North Adelaide in 1981 and scored one Magarey Medal vote from his three games (contrary to other articles, which stated that he was awarded three votes in each of those three games). He won the award in 1983, becoming the tenth North Adelaide player to achieve the most sought after individual award in the SANFL. The talent scouts from Victoria persisted in pursuing one of the most sought after players in the SANFL. He eventually was lured to the VFL in 1987 to join Essendon but niggling injuries kept his appearances limited, playing 22 games over four seasons. St Kilda picked him up in 1991 but the following year he decided to return to his home state for one last season with the Roosters, where he played four Foundation Cup pre-season games before retiring.[1]
Antrobus was named in the forward pocket in the official North Adelaide 'Team of the Century'.
On 24 October 2000, Antrobus was awarded the Australian Sports Medal for being a "recipient of the highest individual honour in South Australian Football".[2]