Former AFL umpire Dean Margetts on if Josh Traecy was unfairly umpired against Hawthorn and he explains the unprecedented blue card shown in the WAFL semi-final

Former AFL umpire Dean Margetts on if Josh Traecy was unfairly umpired against Hawthorn and he explains the unprecedented blue card shown in the WAFL semi-final. Margetts was a key compontent in the blue card being introduced and he details why it was required. Learn more about your ad choices. Visit megaphone.fm/adchoices