"Pereira has had 12 fights in mixed martial arts. Only eight of those have been in the UFC, but in those eight fights he has won middleweight and bantamweight championship belts and defeated five champions. If Pereira, who has never competed in wrestling or grappling, becomes heavyweight champion, we will step aside and say he is the greatest MMA fighter of all time," Sonnen said.
Recall, in his last fight Pereira already in the first round knocked out Jamal Hill.