Isolation

Definition

An isolation raise is a pre-flop or post-flop raise designed to thin the field and get heads-up against a particular opponent, usually a weak or loose player.

How Isolation Works

In poker, isolating a player means raising with the intention of forcing other opponents to fold, leaving only you and the target player in the hand. This is a common strategy when a weak player limps into the pot. A player in a later position, recognizing the limper's weakness, may raise to isolate the limper, hoping to play the hand heads-up against an opponent likely to make mistakes.

Strategic Considerations

• Hand Selection: Players typically use strong hands for isolation, such as high pairs (TT+) or strong aces (AQ+). However, skilled players may also isolate with weaker hands if they believe the target will fold to continuation bets.
• Position: Isolation is most effective from late position (cutoff or button) because you can see the actions of players before you and control the pot size.
• Stack Sizes: Short-stacked opponents are prime targets because they are often forced to commit their stack with a wide, weak range.
• Opponent Tendencies: Ideal targets are passive players who limp often and fold to raises, or loose players who call too wide pre-flop but play poorly post-flop.

Risks

• If multiple opponents call, the pot becomes multi-way, reducing the advantage of isolation.
• A player behind you may re-raise with a strong hand, putting you in a tough spot.
• Even in a heads-up pot, you still need to outplay your opponent post-flop.

Related Terms

• Squeeze Play: A play where you re-raise after several opponents have entered the pot, often to isolate a weaker player or steal the pot.
• Blind Stealing: A raise from late position to win the blinds, not necessarily targeting a specific player.
• Heads-Up: A hand played between two players, which is the goal of isolation.