Khabib Nurmagomedov hadn't even left the Octagon on Saturday before the debate began. Was he retiring as MMA's greatest of all time?
Former UFC two-weight champion Daniel Cormier, who was Nurmagomedov's teammate at American Kickboxing Academy, said Nurmagomedov is the GOAT. Among Nurmagomedov's credentials is a 29-0 record, which included losing just two rounds, one to Conor McGregor and -- surprisingly -- the first round on Saturday to Justin Gaethje. No other GOAT candidate has that zero in the loss column.
Jon Jones, who might be the most widely recognized as the GOAT, quickly weighed in on social media, scoffing at the notion of affixing the GOAT label to a fighter with just four title defenses.