The 8-1 chance Cross Counter, who broke the track record when winning the Gordon Stakes at Glorious Goodwood in the summer, won by a length from the Hughie Morrison-trained Marmelo, with A Prince Of Arran third for Charlie Fellowes.
This is not the first time a racehorse has been euthanised following an injury sustained in the Melbourne Cup.
In Arabic, he told Charlie Appleby: "Well done".
IT was on their many road trips to Yorkshire that aspiring trainer Charlie Appleby and jockey Kerrin McEvoy forged a bond that culminated with Cross Counter becoming the first British victor of the Melbourne Cup. It was also 20 years after Faithful Son became the first runner for the Godolphin operation in Melbourne.
"Our thoughts are with animal lovers across the country who have been affected by this loss, and confronted by the very real risks posed by racing to the horses involved", RSPCA Australia spokeswoman Jane Speechley said.
The Melbourne Cup is the race that "drives us all", the Youngstar jockey said.
"Not only is it the race that stops our nation, it's also now the race that's targeted around the world".
"When I was lucky enough to get the job, I said there were two things I wanted to do - win the Derby and the Melbourne Cup", he said.
Before the race, The Cliffsofmoher was "sweating up", which can sometimes be an indication a horse is in distress.
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The group tracked horse deaths from August 1, 2017 to July 31, 2018 and found 119 horses in total died, including 52 in New South Wales and 24 in Queensland.
It was also first win for Godolphin, the mega-stable founded by the Vice President of the UAE and Dubai ruler Sheikh Mohammed bin Rashid Al Maktoum.
"That's what it's all about, the learning curve".
"I am just so delighted".
The Newmarket-based Appleby, who gave Godolphin its first Epsom Derby victor, Masar, in June, added: "This is huge for everybody. It's a dream. It has just been one of those incredible years".
Vets rushed to the scene moments after the incident and put up green tarpulin while they treated the horse, but unfortuantely the 5-year-old could not be saved.
"I'm going to take off my clothes off, keep my tie and thong and shoes socks on".
The victory had strong a connection to Sheikh Mohammed's Darley stallion operation through his sire Teofilo for whom he became a 15th G1 victor.
Admire Rakti and Araldo were both killed in the 2014 Melbourne Cup.