Bobby Lupo -Yet he's the most accomplished name on GSP's list...Malvert the Janitor -stringtheory - Serious answer BJ.
Already considered a legend but with proper commitment could of easily been the GOAT.
Still owned it though.
Only guy to ever be ranked number one in the world in two weight classes at the same time.
BJ is the strangest case. Almost every big name on his resume beat him.
He screwed the LW division for years. They were trying to hand him the belt and Pulver beat him and Uno drew him, then the UFC scrapped the whole division.
For as big as the Hughes win was, the second loss to GSP negates that. BJ "to the death" quit on his stool.
He does his LW comeback and beats Sherk and a bunch of guys from TUF.
He has the big: Sherk, Gomi and Hughes wins, but the losses to Edgarx3, Diaz, Pulver, GSPx2, Hughes, Rory kind of cancel those out.
He's a one of a kind case.