GSP and its not a debate. Clean, defended his title for a decade vs the most juiced fighters, avenged his two lost with fashion.
No one come close to this !

probably brock lesnar

super man punch man

Why are you so scared to fight me?

I wouldnt say there is a GOAT, more so there are just greats. saying GOAT means they would be anybody at any time at any weight class. therefore there are greats.

All goats cept drug cheat Jones

what fight u over the phone? lol give me a location and time

Not really, he lost a few fights recently that he got favourable judges decisions in.

khabib is the goat, undisputed , undefeated. Hes never has had any competition inside the octagon and has never lost a round... you can't get any more GOAT status then that

GSP used to be the goat but he has fought 1 time since 2013
look at anderson silva, hes fought 8 times since 2013 and lost 7 out of the 8.
fighting is way more technical these days then it was back then , that's why he hasn't been fighting consistently since 2013 he knows its tougher now and he'll get rocked like silva did