Brock Lesnar has only spent four years in mixed martial arts and he has already accomplished more than most fighters do in their careers.
He's been facing the best in the world since his second professional fight and has already won the UFC heavyweight championship.
Indeed, Lesnar's rise to the top of the sport was freakishly quick, but it seems as though he might be falling just as fast.
Brock is coming off a brutal loss to current UFC Heavyweight Champion Cain Velasquez that left many fans questioning his future in the sport.
Since that loss, Lesnar has coached on The Ultimate Fighter opposite Junior Dos Santos. He was supposed to fight Dos Santos after the season was over, but was forced out of the fight due to diverticulitis.
This is the second time Brock has needed to take a lengthy break between fights due to his diverticulitis.
The former heavyweight champion is definitely going through a rough patch in his career and it's arguable that his best days with the sport are behind him.