There’s no question the UFC boasts the bulk of the best fighters in the world and making it to the organization is an accomplishment worthy of praise. However, that’s not to say the path is always a smooth one for the elite athletes calling the Octagon home. In fact, nearly every Mixed Martial Artist in the sport has a moment he/she would love to erase from history. For example, consider some of the competitors set to scrap on September 21 at UFC 165. (Photos by USA Today Sports Images)