in a couple of years, I'd say some of MMA's current roster of fighters, in their respective weight classes guys like BJ Penn, George St. Pierre, Anderson Silva, Miguel Torres, Urijah Faber, Lyoto Machida (i know, i know), among many others, like the names listed above, could go down as GOAT. well Ken Shamrock is a toss-up in this day and age, the longer he keeps fighting, the more his legacy diminishes. He like Royce will always be the pioneers of the sport. But it was a different time back then. And Royce had the smarts to hang it up after his man handling from Matt Hughes. Chuck, Randy, especially Fedor do belong on that list though. You can say what you want about Chuck especially as of late. Him being one dimensional has finally caught up to him, but you got to give the man has his dues he went on a major tear in the sport. It's just Quinton Jackson, Rashad Evans and now shogun are his kryptonite. His chin isn't the same anymore. Hell I'm surprised Wanderlei wasn't able to K.O him during that fight. Randy on the other hand, at his age can still hang, because his style allows it too, more so than Chuck's style does in today's MMA. And as for Fedor, despite the one blemish on his record and his latest loss in a Sambo tournament, absolutely BELONGS to be on a list for GOAT.