Fedor-- one example-- but for the most part, all the greats either are in the UFC or eventually migrate to the UFC. You don't see great UFC fighters migrating away-- they know where the competition is.
I would love for Fedor to actually join the best. But Dana (love him or hate him) wasn't going to be azz raped in the deal, and that is what they tried to do. He was already giving up alot, but Fedor's agent wanted way too much.
So Fedor can keep fighting with the little leagues, he may be great, but I will never see him fight (unless it is on UFC). Because the other crappy people on the card, makes it not worth the money to buy the PPV.
________
The Amazing Race Advice