STRATEGY article: cutoff-opening-range-guide-mq105gb3

Cutoff Position Advantage

The Cutoff (CO) is the position closest to the Button (BTN), offering the second-best informational advantage postflop after the BTN. Since the BTN acts after the CO, the CO can raise or fold to isolate the blinds while avoiding being out of position after the BTN calls. Therefore, the CO's opening range is wider than early position, but still requires balance.

Standard Opening Raise Range

At a standard 100BB stack depth with no limpers, a reasonable CO raising range comprises about 20%-25% of all starting hands. A typical range includes:

• Pairs: 22+ (all pairs)
• Suited Connectors: 45s+ (including suited gappers like 57s, 68s, etc.)
• Suited Aces: A2s+ (all suited aces)
• Suited Broadways: K9s+, Q9s+, J9s+ (note K9s is weaker than KTs, can be selectively folded)
• Offsuit Broadways: ATo+, KTo+, QTo+ (AJo+, KQo are mandatory raises)
• A few suited hands: e.g., T9s, 98s, but avoid too many trash hands

Note: The above range is a GTO-oriented baseline; actual adjustments should be made based on opponents.

Against Limpers

When there are multiple limpers ahead, the CO should be more cautious about raising, avoiding weak hands that isolate multiple callers. Suggested tighter range:

• Pairs: 77+
• Suited Connectors: T9s+ (including suited gappers)
• Suited Aces: ATs+
• Suited Broadways: KJs+, QJs+
• Offsuit Broadways: AQo+, KQo

Suggested raise size: 3BB base, plus 1BB for each additional limper.

Facing a 3-bet

After the CO opens, if 3-bet by the BTN or blinds, the defending range depends on opponent tendencies and stack depth.

• 4-bet range: QQ+, AK, plus some mixed A5s, A4s (as 4-bet bluffs)
• Calling 3-bet range: TT-JJ, AQ, suited connectors like KQs, AJs, ATs, KJs, QJs, etc. Avoid calling with weak suited aces (e.g., A2s-A5s) unless the opponent's 3-bet frequency is very low.

If the opponent is tight-aggressive, tighten defense; against loose-aggressive opponents, can be slightly wider.

Adjustment Factors

1. Opponent Tendencies: Against players who react weakly to blind steals, raise more marginal hands; against frequent defenders, raise strong hands and fold weak ones.
2. Stack Depth: Deep stacks (>150BB) can include more suited connectors and speculative hands; short stacks (<40BB) should be extremely tight, only raise TT+, AQ+.
3. Button Style: If the BTN likes to call, avoid raising trash hands; if the BTN often folds, can be more aggressive with isolation.

Example Scenarios

• Effective stack 100BB, CO holds 87s, all fold to you: Standard raise to 3BB. If the blinds are tight-passive, consider a larger raise (4BB) to increase fold equity.
• Opponent 3-bets to 9BB, you hold AJo: Usually fold, as AJo has insufficient equity against a 3-betting range. However, if the opponent 3-bets frequently, can 4-bet bluff or call (depending on opponent's tendency to call 4-bets).

Summary

The Cutoff's opening range should be balanced and adjustable. Mastering the baseline range and then continuously refining it by observing opponents is key to long-term profitability. Remember: Position is the core of Texas Hold'em; using the Cutoff effectively allows you to gain the initiative preflop.

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The strategies in this article are based on common live and online no-limit Hold'em scenarios; specific application should be adjusted to actual circumstances.