What is the bubble in poker tournaments?
The bubble is the stage just before the paid places — when one or a few more eliminations put everyone remaining in the money, and the value of simply surviving briefly rivals the value of chips.
Why it matters
The bubble is where ICM pressure peaks and where more tournament equity changes hands than at any showdown. Medium stacks must fold nearly everything rather than risk busting one spot from the money; the big stack, who fears no one, gets to open-shove absurdly wide into people who can't call.
Playing the bubble well means knowing which side of that dynamic you're on. With a big stack, relentless pressure is free money. With a medium stack, patience is not weakness — folding good hands is literally +EV in dollars.
The numbers
- On the bubble, a big stack's profitable shoving range can approach any-two against stacks that can only call with premiums — the same mechanism that makes the 5bb small blind shove 100% of hands, amplified by payout pressure.
- Bubble mistakes are invisible at the table: calling off a medium stack with AQ and losing looks like bad luck, but the ICM error was made the moment the chips went in.
Figures come from the same preflop charts and research data the rest of the site uses (charts last updated July 5, 2026); they change when that data does.
Simplified Nash open-shove ranges for 5–20bb from every position, written out as text.
Common questions
Should you tighten or loosen on the bubble?
Depends on your stack. Big stack: loosen your shoves dramatically — nobody can call you. Short stack: shove before you're too short for fold equity. Medium stack: tighten your calls hardest of all; you have the most to lose by busting next.
What is a bubble boy?
The last player eliminated before the money — the worst finish in a tournament. Every payout structure guarantees exactly one, which is precisely why the spots just before it play so tight.
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