If this is your definition of cheating...
btw nothing Nadal ever did in his entire career was as shameful as Becker against Berasategui in their Monte Carlo encounter, when Becker dived and tried to hit a volley that bounced on his own side of the court before landing into the other side, umpire blinked, Berasategui went mad, Becker went back to his baseline refusing to make any eye contact with both the umpire and Berasategui. Your probably forgot that match or refuse to remember

thanks God Berasategui won in the end.