Dennis was a half forward from Western Australia and debuted in Carlton's premiership season of 1987, playing 23 games. He played his final season at North Melbourne in 1992.
South Australia 18.16 (124) defeated Western Australia 9.9 (63), at WACA, 16 June 1987
Victoria 16.20 (116) defeated Western Australia 13.14 (92), at Subiaco Oval, 22 July 1987