#2 Jon Jones
Height: 1.93 m
Weight: 93 kg
Divisions: Light heavyweight
Age: 30 years old
Record: 22-2-0 (9 KOs – 6 Submissions)
The only reason for him for not being number one on the top 10 best MMA fighters of all time is that he was inactive multiple times in his career, due to some controversies. Jones won the light heavyweight UFC title at the age of 23, becoming the youngest champion in the UFC history. No one has defeated high-level fighters in MMA as Jon did.
From 12-April 2008 till 29-July 2017, he scored 22 wins and just 1 loss due to disqualification in a fight he was definitely going to win against Matt Hamill. Plus 1 no contest against Daniel Cormier for testing positive for Turinabol after the fight.