Currently UFC lightweight champion Frankie Edgar is one of the most successful and smallest lightweights in MMA.
Standing at 5’6″, Edgar usually cuts very little, if any weight before a fight.
Although his focus is on his UFC 136 opponent Gray Maynard, Edgar told MMAFighting.com that moving to featherweight could be a possibility in the future.
If Edgar does find himself in that situation he could end up like Randy Couture and BJ Penn as fighters who have won UFC championships in two different weight divisions.
Here’s a look at some of the other fighters who could be successful at a different weight division.