This Peter van Vossen miss vs Celtic, often regarded as the worst ever miss in an Old Firm derby, saw the Rangers star miss an absolute sitter in their game on 14 November, 1996. With Rangers leading 1-0, Van Vossen had this golden opportunity after being set up by Jorg Albertz. His howler of a miss however got him into Old Firm folklore!
Celtic 0-1 Rangers November 1996 (Peter van Vossen Old Firm Derby miss vs Celtic 84′)