Amid their ongoing feud, Usman Nurmagomedov has hailed Arman Tsarukyan as one of the best in the world. At UFC 331, Tsarukyan needed to deliver a standout performance to earn both the lightweight champion’s and the company’s attention, and that he did. A first-round elbow knockout of Mauricio Ruffy meant the Armenian can no longer be denied; he has to be the number one contender