River Block Bet Strategy: Small Sizing Is Not Always Weakness

Short Answer
A river block bet uses small sizing to gain thin value and avoid facing a larger polarized bet. It is not just weakness; it is a range-management tool.
When It Applies
Block betting works when you have many medium-strength hands, villain can apply large polarized pressure, and worse hands still call a small bet. Examples include weak top pair, second pair, and hands that get called by ace-high or small pairs.
Risk
If opponents raise small bets aggressively, your block-bet range needs strong-hand protection. A range without enough nutted hands can be punished by raises.
Decision Steps
- Confirm thin value targets exist.
- Check whether villain can polarize with large bets.
- Include strong hands to protect small sizing.
- Versus raises, defend by blockers and pool tendencies.