Brazilian lightweight veteran Jean "White Bear" Silva announced his retirement from MMA to Tatame today, citing exhaustion and his current lack of a manager, among other reasons.

"After a 10-year career and 40 fights, I feel too tired to both train and manage my new training center here in Joao Pessoa... It's a very sad day for me, but sooner or later this day would have come. I think I've given my contribution to MMA, mainly in England, where I spent most of my career."

Photo by Dave Mandel for Sherdog.