Back-Counting (Wonging)

Back-counting, also called Wonging after its inventor Stanford Wong, is a card counting strategy where the player stands behind the table counting cards without placing any bets. When the count becomes favorable, the player sits down and begins betting. When the count drops, the player leaves the table.

This technique maximizes the counter's edge by ensuring they only play in favorable situations. A traditional sit-down counter must endure many hands at minimum bet during unfavorable counts. A Wonger avoids these negative-EV hands entirely, dramatically improving their hourly win rate and reducing variance.

Casinos combat back-counting with no mid-shoe entry policies, which prevent new players from joining a game until the shoe is reshuffled. This rule effectively eliminates the Wonging advantage. When choosing a casino for card counting, the availability of mid-shoe entry is an important factor to consider.