The sporting world is in a state of mourning following the news that boxing legend Muhammad Ali has died.
As is the modern way, millions of people have taken to social media to share their favourite anecdotes, quotes photographs and videos of the great man.
While on Twitter and Instagram, the hashtags #MuhammadAli and #RIPMuhammadAli were both popular, there was another less obvious one that was #GOAT:
No, it's nothing to do with the farmyard animal. It is in fact, a very fitting tribute for the...