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Poker glossary

Button (BTN)

What it means

The button (BTN) is the dealer position in poker - the last player to act on all post-flop betting rounds. It’s marked by a small disc that rotates clockwise after each hand. This position offers maximum information since you see every other player’s action before making your decision. The button is statistically the most profitable position at the poker table.

How it works at the table

When you’re on the button, you act last on the flop, turn, and river. Only the blinds act after you preflop. Here’s a typical scenario: You hold A♦ J♣ on the button with 100bb. UTG raises to 3bb, MP calls, CO folds. You can 3-bet to 11bb, call, or fold with full knowledge of the action. After calling, the flop comes J♠ 8♦ 3♣. Both opponents check to you - now you can bet for value, check back for pot control, or even bluff if you missed. This positional advantage lets you control pot size and extract maximum value.

Strategic context

Button play forms the foundation of winning poker. You can play roughly 40-50% of hands profitably from this position - far wider than the 15% you’d play from early position. The button allows aggressive strategies like stealing blinds, floating flops, and applying maximum pressure in 3-bet pots. Professional players often show their highest win rates from the button, sometimes earning 20-30bb/100 hands in this position. The combination of information advantage and initiative makes the button poker’s power seat.

Common mistakes

Players waste the button’s potential in three main ways. First, they play too passively, just calling instead of 3-betting hands like AJs or 99 that benefit from fold equity. Second, they fail to steal blinds often enough - folding marginal hands like K7s or Q9s that show profit as button raises. Third, they don’t apply enough post-flop pressure, checking back too frequently when opponents show weakness. The button demands aggression.

Understanding button play requires mastering pot odds for wider calling ranges and implied odds for speculative hands. The button works in tandem with the cutoff (CO) position, which acts as a “mini-button” when the actual button folds. Small blind and big blind defense strategies exist largely to combat button aggression. Position remains king in poker, and the button wears the crown.