CO位河牌干燥牌面平跟（CO River Flat Call Dry）
On the river, a player in the cutoff position facing a bet on a dry board chooses to only call.
Term Explanation
CO (Cut Off) is the position immediately to the right of the button, offering post-flop positional advantage. The River is the fifth community card and the final betting round. Flat Call means to just call without raising. Dry refers to a board structure lacking draws, typically a rainbow board (three different suits) with no straight draw possibilities—for example, a flop of K♠8♦2♣, turn 5♠, river A♥. Such a board allows only a few combinations to make strong hands, with most made hands being top pair or pocket pairs.
Strategic Significance
On a dry river board, a player in the CO who Flat Calls usually indicates a medium-strength hand, such as top pair, middle pair, or a small straight, but not strong enough to raise (since raising might only get called or re-raised by stronger hands, losing value). This play in Texas Hold'em is often used to induce opponents to continue bluffing or to value bet thinly. For observers, a CO river flat call on a dry board typically suggests a range skewed towards medium-strength hands near the top of their range, rather than very strong hands or pure bluffs.
Usage Scenario
Typical situation: Pre-flop CO raises, big blind calls. Flop K-8-2 rainbow, CO bets about 2/3 pot, big blind calls. Turn 5, CO bets 2/3 pot, big blind calls. River A, big blind checks, CO bets, big blind flats. At this point, the big blind's hand might be KQ, KJ, 88 (though 88 would usually raise), or AA (but AA would likely 3-bet pre-flop), mostly top pair.
Related Terms
- Value Bet
- Bluff Catch
- Dry Board
- Cutoff