Jovanovich was a second round draft pick of Hamilton in the 1991 college draft. He signed as a free agent with the Seattle Sea Hawks of the NFL in 1992, and jined Hamilton after being released by Seattle in training camp in September. Jovanovich played 9 games for Hamilton in 1992 an all18 games in 1993. Jovanovich became a free agent for the 1994 season and signed with Toronto, play 16 games for the Argos. Jovanovich was traded by Tornto to Ottawa part way through the 1995 season with PK Wayne Lamie and LB Chris Tsangaris for PK Terry Baker, G Scott Douglas and futures. Jovanovich completed the 1995 season with Ottawa and was traded by the Rough Riders to Montreal in September of 1996 for OL Duanne Amindell and Tim Simpson. Jovanovich was released by Montreal in February of 1997.