Who the real GOAT is... They forget that GSP has been in the UFC since 2003-04. Boring fights they say? ... They forgeting old school GSP. Fighting at the highest level for years. Beating the greatests.... A champ at the very top of the game for a good 7 years. Popularized the superman jab Greatest takedown artist the UFC has ever seen Longevity Even after 4 years of retirement and moving up a weight class, still can take an opponent down at will... And this is why kids, that GSP is the greatest fighter the UFC has ever had.