In his rookie season with the NBL South East Melbourne Magic, they won the National Basketball League Championship.
Drmic and the NBL South East Melbourne Magic also competed in the 1997 National Basketball League Grand Final Series.
In 1998 he was selected to represent Australia at the FIBA World Championships in Greece and won silver at the Goodwill Games in New York City.
Seasons 1998–2000 he signed with the NBL Victoria Titans and played in the National Basketball League Grand Final Series for the 1998–1999, 1999–2000 championships.
His younger brother, Anthony Drmic, was a player for the Boise State University Broncos basketball team, and now plays for the Adelaide 36ers in the NBL.