#2. Daniel Cormier
Beloved UFC mouthpiece and former double champion, Daniel Cormier, retired after losing the rubber match to heavyweight great Stipe Miocic. As the third fight came to a conclusion, fans still felt empty with 'DC''s retirement.
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Cormier has spoken openly about wanting to retire by 40-years-old, but he went a little past this to finish things up with Miocic. Now at the age of 43, Cormier is still coaching and heavily involved with the UFC as he's seen frequently commentating events.
Looking back at the career of the former light heavyweight and heavyweight champion, it's important to note that he's only lost to Jone Jones and Stipe Miocic. He has practically dominated any and all other competition.
It's bittersweet to see Cormier put an end to an illustrious combat sports career. Especially after seeing that he still has a lot left in the tank, as he went toe-to-toe against Miocic in a fantastic trilogy.
#1. Khabib Nurmagomedov
It almost feels like a robbery to see Khabib Nurmagomedov retire at only 32-years-old. The Dagestani fighter had the most dominant career in UFC history and became one of the biggest stars in all sports because of it.
While the goal was 30-0, 'The Eagle' ended his career just one win shy of the goal. Verified to be a man of his word, Nurmagomedov promised his mother that he wouldn't compete further after the Justin Gaethje match in Abu Dhabi.
The passing of his coach and father, Abdulmanap Nurmagomedov, forced the early retirement on one of the greatest fighters of all time, if not the greatest. 29-0 and he arguably never lost a round, never saw his own blood and was never knocked down -- Nurmagomedov undoubtedly could still be competing and winning at the top of the lightweight division.