[Ace Gunner]

Originally Posted by Third Eye

There are countless ways to mark cards. More than likely he was probably doing something simple like nicking 10-valued cards with his fingernail. This could pay dividends in blackjack. It's doubtful that he was cheating at poker though. You would need a much more robust method that would not only identify the value of the card but also the suit to really be effective.

For what it's worth, there really is no such thing as a good gambler. Rather there are good cheaters and lucky gamblers. Cheaters get caught though, and the law of large numbers usually limits how lucky people are in the long run.

yep