20bb Steal

Overview

The 20bb steal is a fundamental concept in no-limit hold'em tournaments and cash games, particularly in the middle to late stages of tournaments where stack sizes shrink relative to blinds. The term refers to a raise from a late position (cutoff or button) when the effective stack—the smallest stack among active players in the hand—is approximately 20 big blinds. At this stack depth, standard preflop raise sizes (2-3 big blinds) consume a significant portion of the stack, making postflop play awkward for both the raiser and the defender.

Strategic Rationale

The primary goal of a 20bb steal is to capture the blinds (1.5 big blinds) uncontested. The blinds, especially the big blind, face a difficult decision when holding marginal hands. Calling a raise would commit a large fraction of their stack (e.g., calling a 2.5bb raise with 20bb left leaves 17.5bb), and they risk facing a continuation bet or a jam on many flops. Thus, they often fold hands that would normally be playable deeper. The stealer exploits this by raising a wide range from late position, including hands like weak aces, suited connectors, and small pairs.

Typical Raise Size

When stealing with 20bb, the standard raise size is 2-2.5 big blinds. A larger raise (e.g., 3bb) unnecessarily risks more chips and does not significantly increase fold equity, as the blinds' calling ranges are already tight. A min-raise (2bb) can also be effective, especially if the blinds are unlikely to re-steal lightly.

Adjustments and Counterplay

Blinds aware of frequent steals will adjust by re-stealing (3-betting or jamming) with hands like medium pairs, suited aces, and broadways. The stealer must balance their raising range to include some strong hands (e.g., big pairs, AK) to protect against re-steals. Additionally, stack sizes slightly above or below 20bb alter dynamics: with 15bb, pushing all-in becomes a viable alternative to a standard raise; with 25bb, the blinds may call more often.

Common Mistakes

• Raising too large: Wastes chips and reduces fold equity from hands that would fold to a smaller raise.
• Raising too weak a range: Without sufficient strong hands, the stealer becomes exploitable to 3-bets.
• Ignoring opponent tendencies: Some blinds defend wider (e.g., calling station) or narrower (e.g., tight player); adjust accordingly.

Summary

The 20bb steal is a profitable core play when used judiciously, leveraging stack pressure to claim dead money. Mastery involves understanding stack depth dynamics, opponent ranges, and the balance between aggression and caution.