Intermediate Using Blockers to Inform Decision-Making in the Big Blind Owen Gaines Owen Gaines is a professional poker player and author who has played an estimated ten million hands and written four poker strategy books. March 31, 2026 Using blockers correctly helps turn uncertain big blind spots into more controlled and profitable decisions Playing from the big blind often puts you in difficult spots, but blockers can help guide smarter decisions. These are cards in your hand that reduce the chance your opponent holds certain strong combinations, giving you more clarity in marginal situations. One common use of blockers is when facing late-position aggression. If you hold cards that block premium hands like big pairs or strong aces, your opponent is slightly less likely to have them. That can make calling or even raising more appealing. Blockers are especially useful when considering bluffs. Holding a key card that removes possible value hands from your opponent’s range can increase your fold equity. For example, having an ace in hand may reduce the likelihood your opponent has top pair or better. From the big blind, defending wide is often necessary, but not all hands perform equally. Hands with strong blocker properties can be better candidates for continuing, even if they are not strong on their own. This adds depth to your defense strategy. Post-flop play is where blockers become even more important. If the board shows possible draws or strong made hands, your blockers can help you decide whether to apply pressure or slow down. They give insight into how credible your opponent’s line really is. River decisions benefit greatly from blocker awareness. When deciding whether to bluff or call, knowing which hands you block can shift the math. Blocking missed draws might reduce bluff opportunities, while blocking value hands can make bluffing more effective. It’s important not to overvalue blockers alone. They should support your overall read of the hand, including betting patterns and position. Relying only on blockers without context can lead to costly mistakes.