The UFC has seen almost every legendary figure in modern MMA walk through their cage doors, but never every great fighter was good enough to win the ultimate prize in the sport.
Some fighters may have had a single off night while never getting another opportunity while others were stuck in a division with an all-time great they could never beat. Whatever the reason, some fighters were never meant to wear the 12-pounds of gold.
One of the criteria for the list was that a fighter had to have at least one title fight. It would be difficult to be considered one of the best and never fight for a UFC title at least once in their career.