Obst started his career in the South Australian Amateur Football League, representing the Australian Amateurs team at the 1988 Adelaide Bicentennial Carnival before playing for Port Adelaide.
Andrew was a member of 4 Port Adelaide premiership teams.
Andrew eventually joined Melbourne for the 1990 AFL season.
Obst came from a known Port Adelaide family; his grandfather Ken, father Peter and uncle Trevor all played with distinction for Port Adelaide.
[1] Andrew's uncle Trevor Obst is Brad Ebert's grandfather.