Hall of Fame inductee and former World Champion Ken Shamrock rates Conor McGregor as the best pound for pound fighter in the sport but said that the new champion and those around him needed to be wary of success going to his head.
He did not mean this as a comment on McGregor's personality but rather the temptation of all champions to start bathing in the glow of their own publicity and status.
There's so many people in his head right now telling him how great he is that you believe you're the greatest thing in the world right now and no rules apply to you... I'm saying this because I went through it.
Shamrock, a 51 year old man, is still fighting these days. He was speaking as part of the build up to his fight with his old rival Royce Gracie.
The UFC version of the Masters or the Senior Tour.