I'm playing someone $20/game (8ball). I'm up on him 8 games. I collect after each game. I found it wierd that I miscued 2 times in the same game, so I start watching him closely. I caught him wetting the chalk. I called him out on it. Put my sticks away and refused to pay him for the last game. My question isn't limited to wetting the chalk but any form of cheating.