#3 Demetrious Johnson
Demetrious Johnson is perhaps one of the most underrated fighters in the history of UFC. Whenever people debate about great fighters, Demetrious Johnson is often overlooked just because of the fact that he fought in a smaller weight class.
Some even come up with the argument that Johnson barely had any competition during his run as the Flyweight champion. But piling up 11 successive title defences in the biggest promotion in the world is not a small achievement.
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Johnson was so well-rounded during all these fights that he became only the second fighter in the UFC roster to be awarded bonuses in all four possible categories.
He currently has a professional record of 27-3 to his name and is set to embark on a new journey with ONE Championship. It would be interesting to see how Johnson performs in the promotion but no matter what happens, the history books will always classify Johnson as one of the greatest fighters of all time.