What is Isolation Raise in poker?

An isolation raise is a strategic preflop raise designed to narrow the field down to just yourself and a single, usually weaker opponent, who has entered the pot with a limp. The primary goal is to capitalize on your skill edge by playing a heads-up pot where your advantage is maximized. By eliminating other players, you increase your chances of winning the pot and simplify post-flop decision-making. The weaker the opponent you are isolating, the greater your expected value in the hand, making this a highly profitable play against recreational players. This move effectively isolates the fish, preventing others from also getting involved cheaply.

A loose player limps from UTG. You're in MP with AJs and raise to 4BB, aiming to isolate the limper and play a heads-up pot against them.

Isolation Raise (Isolation Raise) belongs to the Strategy side of the game and shows up in almost every hand of Texas Hold'em. If you are just starting out, read the poker rules and the hand rankings first, then come back here. To practise risk-free you can play against our AI right on the site.