3) Khabib Nurmagomedov

This is a bit of a controversial choice since stars such as Valentina Shevchenko did more with her title than Khabib.

However, the Russian overcame one of his biggest challenges in Justin Gaethje with a dominant display.

Further, Khabib was fighting after the loss of his father, Abdulmanap. He then retired from the sport with a record of 29-0 and left many in shock.

Khabib fought off a lot of mental demons to get the win and it showed, and he promised his mother he would never fight again.