CO 10bb Steal

Overview

CO 10bb Steal refers to a common situation in no-limit hold'em tournaments (or cash games with short stacks) where a player in the cutoff (CO) position has an effective stack of approximately 10 big blinds and decides to raise to win the blinds and antes. At 10bb, the stack is short enough that the player is often committed to calling a shove from the blinds, yet deep enough to have fold equity against many hands.

Objectives and Reasoning

The primary goal is to accumulate chips by exploiting the tightness of players in the blinds. With 10bb, a standard steal raise is typically 2-2.5bb, risking about 20-25% of the stack. The cutoff has position on the blinds and often a wider range than earlier positions. If the blinds fold, the steal gains 1.5bb (or more with antes). If a blind shoves, the cutoff must decide whether to call based on pot odds and range. Against many opponents, calling a shove with a wide range is profitable because the pot odds are favorable (e.g., needing to call 7-8bb to win ~13bb).

Adjustments and Considerations

• Stack sizes: If blinds have larger stacks, they may defend wider; if shorter, they may shove lighter. The cutoff should widen or tighten their stealing range accordingly.
• ICM implications: In tournaments, ICM pressure affects decisions. At 10bb, the risk of busting is high, so hands with good equity against shoving ranges (e.g., small pairs, suited connectors) are better stealer hands than weak aces.
• Opponent tendencies: Against tight blinds, steal with a wider range (e.g., 40% of hands). Against loose or aggressive blinds, tighten up to hands that can call a shove (e.g., any pair, Ax, suited connectors).

Example Range

A typical CO 10bb stealing range might include: any pair, any ace, Kx suited, Qx suited, JTs, T9s, 98s, etc. However, equilibrium adjustments depend on game flow and opponent frequencies.

Risks

The main risk is getting caught by a blind who shoves, forcing a marginal call. Over-stealing can be exploited by observant opponents. Also, stacking off with weak hands reduces the stack further, making future decisions harder.

Related Strategies

This concept is part of push/fold strategy at very short stacks (under 10bb), but at exactly 10bb, a min-raise or 2.5x raise is often preferred over shoving because it allows the blinds to make mistakes (folding hands they shouldn't) while still offering fold equity. When stacks drop to 8bb or less, open-shoving becomes more common.