Severn made the announcement from his personal website.
“I was attempting to do my own self-directed retirement tour in the last couple of years, reaching out to only three people,” wrote Severn, who said he had pursued rematches with fellow UFC Hall of Famers Royce Gracie, Ken Shamrock and Mark Coleman. “It seems as though these matches will not take place for whatever reasons and my life now goes on to the next chapter.”
Severn began his MMA career at age 37 and retires at age 54, after completing over a dozen cage fights.
“It has been difficult to juggle so many different parts of my career, but that is when opportunity presented itself... such as my MMA career beginning at the age of 37, and now ending at age 54," Severn said. "Father Time is telling me, it is time to let go,” Severn said. “I have learned over time that the only constant factor is change. It will happen, and there is nothing we can do to stop it, so smile, hold on, and embrace it for all that it has to offer, and hopefully you too will have the ride of your life!”
Severn is a UFC legend, as he was inducted into the promotion's hall of fame during the UFC 52 festivities in 2005.