Melbourne Cup: 'Massive' if James McDonald, Yucatan can win

Twenty-four horses will compete in today's Melbourne Cup. There are two New Zealand-bred horses in the 2018 race - Who Shot The Barman and Zacada. It's a national public holiday in the state of Victoria, and one of the biggest days of the year for betting. Mark Stafford is at the TAB. He talks to Kim Hill.