I played this guy one time and he was cheezin every chance he got and he had no idea where the nine might go. The game was a lot closer than it should have been and this guy was really thinking he was hot stuff. I asked him if he wanted to play call the nine and since he was on a high, he agreed immediately. I beat him to death! It really took the wind out of his sails.
I do agree with chucklez, though, if you want to gamble, you have to play the game with the nine wild. Sometimes the weaker players don't realize how big a difference there is between the two games.