However, Edgar has proven his size to be just another number as his heart often outweighs any type of advantage his opponent may have.
In fact, Edgar's heart as allowed many fans to fall in love with his tough-minded, never give-up attitude over the years.
Even in the lowest of lows, Edgar has found a way to win.
After two impressive performances over Penn, "The Answer" moved on to fellow lightweight Gray Maynard, who gave him the test of his life.
But Edgar continued to come out on top as he found a way to win.
After getting revenge on the only loss of his mixed martial arts career, it was announced that Edgar would be taking on No. 1 contender Benson Henderson at UFC 144.
When action began, it was Edgar who scored points on the judge's scorecards through his aggressive and upbeat style of pace.
But, Henderson would eventually take control of the fight, landing several grueling body kicks.
The never-quit heart of Edgar's was present once again as he continue to battle through a swollen left eye en route to out-striking Henderson 124-114 and winning the takedown battle 7-2.
However, Henderson was able to land more significant strikes, ultimately allowing him to escape Saitama, Japan, as the new 155-pound champion.
Following his first loss in nearly four years, Edgar joined UFC color commentator Joe Rogan for his post-fight interview.
Instead of focusing on the fight at hand, Rogan chose to discuss Edgar's future in the lightweight division.
Rogan presented the option of dropping to the featherweight division after Edgar has spent his entire career fighting at 155 pounds.
Not only has Edgar spent his days at the lightweight division but he's done it well, winning nine of his 12 career bouts inside the Octagon.
If Edgar chooses to make the move to the 145-pound weight division, that will be his own decision.
But until then, no one, including Joe Rogan, should question the former champion, as he's accomplished more than most could ever dream of.
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