ADCC champion, UFC fighter Jon Olav Einemo calls it quits

Today, news broke that former Abu Dhabi Combat Club winner and UFC combatant Jon Olav Einemo retired from active competition in Mixed Martial Arts. Einemo, best known for his high-level submission skills, made this somewhat surprising decision after being cut by the UFC.
An ADCC champion in 2003, he was noted for defeating the famed Roger Gracie in grappling. It seemed that, for a moment in 2011, Einemo would have a shot at five against popular fighter Shane Carwin at UFC 131.It was not in the