CO 10bb Call Off

Definition

"CO 10bb Call Off" refers to a specific decision in no-limit hold'em tournaments, where the player in the cutoff (CO) position, holding a stack of approximately 10 big blinds (bb), chooses to call an all-in bet from an opponent—typically from the button, small blind, or big blind. This action is distinct from shoving (moving all-in) or folding. It implies that the CO player is not the initial aggressor but is facing a shove and decides to call, often based on pot odds, hand strength, and tournament dynamics.

Context and Strategy

This situation commonly arises in late-stage tournaments when stacks are shallow and the cutoff is considered a late position. With 10bb, the player is short-stacked but not desperate. The decision to call off depends on:

• Opponent's range: If the opponent is shoving wide (e.g., from the button or blinds), the CO may call with hands that have sufficient equity against that range.
• Pot odds: The CO is getting a certain price to call. For example, if the blinds are 500/1000 with ante, and the CO has 10,000 chips, facing a shove from the button for 10,000, the pot would be about 12,500 (including blinds and antes), so the CO needs roughly 44% equity to break even.
• ICM pressure: In tournaments, calling off can risk elimination, so survival equity matters. However, with 10bb, doubling up is critical.
• Hand selection: Typical calling ranges include medium pairs (66-99), suited connectors (JTs, QJs), and strong aces (A9s+, ATo+). Premium hands like TT+ or AQ+ are usually shoves or re-shoves, but when facing a shove, calling is standard.

Calling off differs from shoving because shoving gives fold equity. At 10bb, many players prefer shoving first-in to apply pressure. However, when an opponent shoves before them, calling off becomes an option with hands that are too strong to fold but not strong enough to re-shove (though re-shoving is rare with 10bb).

Example Scenario

Blinds: 500/1000, ante 100. CO stack: 10,000 (10bb). Folds to CO, who raises to 2,500 with 9♥9♠. Button shoves for 10,000 total. The pot is now 1,500 (blinds) + 900 (antes) + 2,500 (CO raise) + 10,000 (button shove) = 14,900. CO needs to call 7,500 more (since he already put in 2,500). Pot odds are 14,900 : 7,500 ≈ 1.99:1, requiring about 33.5% equity. Against a typical button shoving range (e.g., 22+, A2s+, K9s+, Q9s+, J9s+, T9s, 98s, 87s, ATo+, KJo+, QJo), 99 has about 55% equity, making this a clear call-off. However, if the opponent's range is tighter (e.g., TT+, AJ+), 99 has only ~47% equity, still enough to call. But if the opponent is extremely tight (QQ+, AK), 99 has ~19% equity, making it a fold.

Related Terms

• Cutoff (CO): The position to the right of the button, considered late position.
• Shove: Moving all-in, often as a first raise.
• Fold Equity: The chance an opponent folds to a bet.
• Pot Odds: The ratio of the current pot to the cost of a call.
• ICM (Independent Chip Model): A model valuing tournament chips considering payout structure.