Drafted by the Footscray Football Club (later Western Bulldogs) with the 26th selection in the 1995 Pre-season draft, Dimattina made his AFL debut late in the 1995 season.
He played 131 games for the Bulldogs until he was delisted at the end of the 2003 season.
[3] In 2005, Dimattina moved to the Gold Coast, Queensland, where he played with the Southport Sharks.
He scored six goals and best afield in the Queensland State League Grand Final before retiring from the Sharks and returning to Melbourne.
[4] Following his football career, Dimattina became involved in the hospitality industry.