Petrosian was accused at the peak of his career though, and I assume that isn’t very common. This would probably have been the match he will be remembered for after he dies, leading his country to victory against all odds. Of course, he was EXTREMELY unprofessional and rude; that goes without saying. However, it’s really not fair of people to assume he was cheating on the basis that he react dissimilarly to others. Also to be fair Wesley also should not have accused him in a public forum without first confirming that he was right and had enough proof. Wesley should have just discussed this with tournament officials privately, thus avoiding all this unnecessary drama.