Only minutes into his debut, on 29 April against the Sydney Swans, he broke his arm and only played eight games for the year.

However, midway through the first quarter, he was stretchered off and did not return after landing awkwardly and badly injuring his right knee.

It was later confirmed that he would have to undergo a full knee reconstruction after scans revealed a ruptured anterior cruciate ligament.

After the 2008 season, Prismall declined the new two-year contract offered to him by Geelong and asked the club to be traded to get a better chance of playing more regularly in the AFL.

Towards the end of the season, however, his form improved considerably, despite the team's poor performances on the field.

He was suspended for two years which, with backdating, ended in November 2016; as a result, he served approximately fourteen months of his suspension and missed the entire 2016 VFL season and was forced to stand down from his role as player welfare manager.