Weideman was just 16 when he made his senior debut for South Australian National Football League (SANFL) club West Adelaide in 1978.
[1] His father, Murray Weideman, had coached the club earlier in the decade, after an 11-year career at Collingwood.
He played 20 of those games in his debut season in 1981, which included their preliminary final win over Geelong, but he wasn't selected in the Grand Final team, his spot taken by captain Peter Moore, who was returning from injury.
[3][4] Used by Collingwood up forward and as a ruckman, Weideman was never again a regular fixture in the team, appearing twice in 1982, five times in 1983 and just once in 1984.
[3] Weideman later had success with Victorian Football Association (VFA) club Coburg.