By A Mystery Man Writer
Kamaru Usman, Alexander Volkanovski, and Israel Adesanya compete for the honor as best men's UFC fighter in the world right now.
The greatest: 25 best MMA fighters of all time
Ranking the Greatest Heavyweights in MMA History, News, Scores, Highlights, Stats, and Rumors
MMA Strong: The Best-Built Bodies and Fittest Fighters in the UFC - Men's Journal
African mixed martial arts fighters in the Ultimate Fighting Championship spotlight, fighters
Brock Lesnar and the 20 MMA Fighters Who Could Compete in WWE, News, Scores, Highlights, Stats, and Rumors, fighters
The Optimal Physique for Mixed Martial Arts., by Ahmed Selim.
MMA Top 10: the Best Male Athletes Competing in Mixed Martial Arts Today, fighters
Jake Paul to Fight in Mixed Martial Arts in Deal With P.F.L. - The New York Times, fighters
Rankings of best women boxers and MMA fighters - Los Angeles Times
Roundtable: Who is the greatest heavyweight of all-time? - MMA Fighting
The 25 greatest MMA fighters of all time, ranked