Blocking bet
A small bet made from out of position to buy a cheap showdown and pre-empt a bigger one. It works against callers and leaks against raisers.
You are out of position on the river with second pair. Checking means facing a bet you cannot comfortably call and cannot comfortably fold to — a two-thirds pot bet costs you far more than the hand is worth defending, and folding gives up a pot you often win. So you bet a fifth of the pot yourself. That is a blocking bet: you set the price rather than let them set it.
It is not a value bet and not a bluff. The point is the cheap showdown: worse hands call small, better hands mostly just call too, and the bet you were afraid of never happens. In pot-odds terms you have traded a possible large loss for a certain small one, which is a good deal whenever your hand is too weak to call a real bet and too strong to fold.
The structural weakness is a raise. A small bet from out of position on the river is a well-known signal, and an observant opponent can raise it with anything, knowing you rarely have a hand strong enough to continue. That is why blocking bets work best against straightforward opponents who call and fold but rarely attack, and why they should be used sparingly against anyone who is paying attention.
The mistake is using them with hands that want to be checked. A hand that beats nothing gains nothing from a small bet — it just donates. And a genuinely strong hand loses money by pricing itself at a fifth of the pot, when the same opponent would have called far more. Reserve the blocker for the middle of your range, where it belongs.
FAQ
What is a blocking bet in poker?
A small bet made out of position, usually on the river, to set the price of the showdown yourself instead of facing a larger bet. It gets a cheap look at the pot with a hand too weak to call a real bet and too strong to fold.
When should you use a blocking bet?
With medium-strength hands out of position, against opponents who call and fold rather than raise. It is a way of turning an uncomfortable check-call decision into a small, controlled cost — but only when the opponent is unlikely to attack the small size.
Why do strong players dislike blocking bets?
Because the small size announces a medium hand, and an observant opponent can raise it with almost anything, knowing you rarely continue. Against attentive players the blocker becomes a way of losing more, not less.