Paulo Costa was affected by recent comments made by his upcoming opponent Azamat Murzakanov regarding a "secret juice." Murzakanov stated cryptically that "very soon we will show what the secret is" and that people will soon learn "what people from Russia have." The remarks appear to have gotten under Costa's skin ahead of their scheduled bout. The nature of Murzakanov's comments and Costa's specific reaction are not elaborated upon in detail, leaving the full context somewhat unclear.
