McEvoy's win was also special for the family as it was Cathy's first time seeing him win the Melbourne Cup after missing his 2016 ride with Almandin.
The results of a post-mortem into the death of The Cliffsofmoher won't be known for several weeks after the Irish-based horse became the fifth to die a from Melbourne Cup-related incident in the last six years.
The next year, Admire Ratki collapsed and died of heart failure after the race, and Araldo spooked returning to be unsaddled and broke his hind leg, and was also euthanized.
Before the race, The Cliffsofmoher was "sweating up", which can sometimes be an indication a horse is in distress.
The Cliffsofmoher was euthanised after fracturing a shoulder early in the race - something officials say was a kindness, but animal welfare groups say the problem is more widespread.
Awful news. The Cliffsofmoher suffered a fractured right shoulder when injured in the Melbourne Cup, unfortunately could not be saved.
Racing Victoria's general manager of integrity Jamie Stier said it was the best option.
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Described as a "tragedy" by veteran Seven commentator Bruce McAvaney, the United Kingdom raider pulled up lame as the field passed the finishing post for the first time.
Channel 7 commentator Bruce McAvaney said it was a "tragedy" while his colleague Richard Freedman had made a point of mentioning how agitated The Cliffsofmoher looked before the race.
The Cliffsofmoher is not the first horse to be put down at the Melbourne Cup. "He's really sweating up badly".
McEvoy told Appleby he needed a good hearty horse with a light weight to win the Melbourne Cup and Cross Counter fit the bill. Sadly there was nothing they could do for The Cliffsofmoher, but Moore is thought to be uninjured.
French-trained horse Verema had to be put down after an injury suffered in the 2013 Cup.
Wagering data from last year's Melbourne Cup Day showed that, in the immediate lead-up to the main race, a peak of 850 bets a second were being placed through Sportsbet.
The horse clipped the heels of another runner and injured a foreleg when falling as the field turned for home. As the remaining 23 horses passed the post, The Cliffsofmoher received medical attention before vets determined it was "unable to be saved".