Usman Nurmagomedov's MMA future hangs in the balance after he was sentenced to six months in prison for his part in a mass brawl at an Abu Dhabi hotel. The Russian was the most sought-after free agent in mixed martial arts after seeing out his contract with the PFL. Nurmagomedov, 28, was the PFL lightweight champion, boasting 22 wins from 23 pro MMA fights, with one deemed a no contest. He was widely expected to sign with the UFC. That all changed in a moment of madness in Abu Dhabi.