Over the past several years, mixed martial arts has rapidly become the world's fastest growing sport.
A major reason for this growth can be credited to the world-class fighters who dedicated their lives to the sport they truly love.
And, because of these fighters' dedication, mixed martial arts fans across the globe have had the opportunity of seeing some of the greatest fights of all time.
Not only have fans seen some of the greatest brawls, but knockouts as well.
While there are many great knockout artists still fighting today, there are some who have stepped away from the sport.
So, the following slides display the 25 greatest knockout artists in MMA history.
Let's take a look.