After Completing Deontay Wilder Trilogy, What Does 'Big Dog' Tyson Fury Have to Do to Become GOAT?

Tyson Fury stopped Deontay Wilder for the second time in Las Vegas at the weekend, to retain his WBC heavyweight title. He declared himself the "big dog" and is widely seen as the best heavyweight out there but he still has some way to go before he can be mentioned in the same breath as Muhammad Ali or Rocky Marciano.