Paulo Costa reacts to Azamat Murzakanov's 'secret juice' comments

Paulo Costa has taken issue with recent comments made by his upcoming opponent Azamat Murzakanov about a "secret juice." Murzakanov stated: "Soon, very soon we will show what the secret is. You will soon find out what people from Russia have." The cryptic remarks appear to have gotten under Costa's skin ahead of their scheduled bout. The context suggests Murzakanov may be referring to training methods or techniques used by Russian fighters. Costa's reaction indicates the pre-fight psychological warfare has begun between the two light heavyweights.