Paulo Costa has been bothered by recent comments made by his upcoming opponent Azamat Murzakanov regarding a "secret juice." Murzakanov teased that the secret of Russian fighters would soon be revealed, stating: "Soon, very soon we will show what the secret is. What people from Russia have, you will soon find out." The remarks appear to have gotten under Costa's skin ahead of their scheduled bout. The Brazilian is known for his own past controversies regarding performance enhancement. This exchange adds an extra layer of tension to their upcoming fight.
