CO 100bb Bubble Play

Overview

The bubble refers to the stage in a tournament when only one player remains before the money, at which point every player who busts loses all their investment, so playing styles typically change significantly. The CO (Cut-Off) is the position to the right of the dealer in six-handed or nine-handed tables; it is a late position but does not have the advantage of the button. An effective stack of 100bb is deep, meaning there is plenty of room to maneuver preflop and postflop.

Strategic Points

• Exploit Tight-Passive Players: During the bubble, short-stacked players will significantly tighten their folding ranges to avoid elimination. Big stacks sometimes take advantage of this by aggressively stealing blinds. The CO, being a late position, can put pressure on loose-passive early position players and tight middle position players, especially when pot odds are unfavorable.
• Be Cautious Against Big Stacks: If an opponent also has a deep stack of around 100bb and understands bubble pressure, there may be mutual respect. In such cases, avoid getting involved with medium-strength hands; prioritize high-quality starting hands (e.g., TT+, AQ+) for raises or confrontations.
• ICM Considerations: During the bubble, ICM (Independent Chip Model) has a significant impact. The CO's decisions must consider chip standings. If your stack is in the middle or ahead, you can moderately increase blind-stealing frequency; if you are short or on the edge, prioritize securing a cash finish and avoid reckless actions with marginal hands.
• Position Value: Although the CO is not as strong as the button, it allows control of the flop action postflop. With a deep stack of 100bb, postflop pressure is high, so the CO should not be overly aggressive with garbage hands to avoid being called or re-raised and ending up in an unfavorable spot.

Typical Example Scenarios

• Suppose the CO holds ATo and all early position players fold. If the button or blinds on the left are short-stacked (e.g., 10-20bb), they are likely to fold to preserve their tournament life, so the CO can raise to 2.5-3bb and attempt to take the pot directly.
• If there is a big stack (e.g., 150bb) on the left who plays aggressively, the CO should avoid raising with marginal hands like suited connectors, as they might be forced to fold to a re-raise and lose chips.

Summary

The core of CO 100bb Bubble Play is balancing ICM pressure with position value. Generally, play tight, but you can steal blinds appropriately against short stacks; be cautious against big stacks and avoid getting into big confrontations with medium-strength hands. Protecting your stack is more important than winning a single blind steal.