Heads-Up Poker Strategy

In heads-up poker, the button posts the small blind and acts first preflop but last on every postflop street. This makes the button the most advantageous position in all of poker — you have positional advantage on the flop, turn, and river, plus you close the preflop action.

The button should open an extremely wide range: 70-85% of hands in most configurations. This isn't reckless aggression; it's mathematically sound because you're getting a discount (posting only the small blind) and will have position postflop. Folding more than 30% of buttons is a significant leak in heads-up play.

From the big blind, your strategy revolves around defending against the button's wide opens. In a heads-up match, you should be defending 55-65% of your big blind holdings against a standard button raise. Folding too much allows the button to print money with any two cards.

Postflop positional advantage is amplified in heads-up because ranges are so much wider than in full-ring. When both players can have almost any hand, the ability to act last — seeing your opponent's action before deciding — becomes the dominant strategic factor. This is why winning HU players focus obsessively on position and structure their entire strategy around maximizing its value.

In heads-up pots, the preflop raiser should c-bet the flop at a high frequency — typically 60-75% of the time. The logic is straightforward: with wide ranges, the flop will miss both players most of the time, and the player who bets first applies maximum pressure.

C-bet sizing in heads-up play should be smaller than in full-ring because the opponent's range is wider and less defined. A 33-40% pot c-bet is standard on most flop textures. This small sizing accomplishes the goal (getting folds from air and building the pot with strong hands) while minimizing your losses when called or raised.

The big blind's response to frequent c-bets is critical. You should be check-calling with middle pairs, draws, and some air (floats), check-raising with strong hands and select bluffs, and check-folding only your absolute worst hands. If you fold more than 50% to flop c-bets in a heads-up match, your opponent can profitably c-bet with any two cards.

Multi-street aggression separates winning HU players from losing ones. Many players c-bet the flop but shut down on the turn. In heads-up play, you should be firing the turn 45-55% of the time after c-betting the flop, and following through on the river with your strong value hands and best bluffs. Single-street aggression is insufficient against competent opponents.

When a tournament reaches heads-up for the title, the dynamic shifts from survival (ICM) toward a winner-take-all mindset. The pay jump between first and second place is typically the largest in the tournament, and accumulating chips is now directly correlated with winning the prize.

Stack depth matters enormously in tournament HU. If both players have 30BB+ effective stacks, the match plays similarly to a heads-up cash game with standard raise/3-bet dynamics. At 15-20BB, the game transitions into a push/fold and small-ball dynamic. Below 10BB, it becomes pure push/fold poker.

At deep stacks, use your postflop skill advantage. Play pots in position, c-bet strategically, and apply multi-street pressure. At shallow stacks, rely on precomputed push/fold ranges and make mathematically sound all-in decisions. The transition between these two modes is where many players make critical errors.

Deal-making is always an option in tournament HU play. If you believe your opponent is significantly weaker, playing it out maximizes your EV. If the stacks are close and your opponent is competent, an ICM chop locks in value. Consider deal-making when the remaining prize pool is life-changing money — reducing variance in those situations is often correct even if you have a small skill edge.