Deep-Stacked Cash Game Preflop Range Construction Strategy

Position Scenario Description

Deep-stacked cash games typically refer to scenarios where effective stack depth exceeds 200 big blinds (BB). Preflop decisions become more complex at these depths because there is significant postflop maneuverability remaining, and position advantage is amplified. This article uses a 6-max table as an example, analyzing the opening ranges, calling ranges against raises, and 3-bet ranges for six positions: UTG, MP, CO, BTN, SB, and BB.

Recommended Ranges (Text Description)

Opening Ranges (200BB Effective)

• UTG: Opening range approximately 10%-12%. Includes all pairs (22+), all suited connectors (54s+), all suited aces (A2s+), suited KQ, KJ, KT, QJ, QT, and offsuit AK, AQ. Excludes extremely weak suited connectors (32s-43s) and small suited aces (A2s-A5s may be kept).
• MP: Opening range approximately 15%-18%. Adds to UTG base all suited K9s+, Q9s+, J9s+, T8s+, 98s, and offsuit KQ, AJ, AT.
• CO: Opening range approximately 22%-25%. Further adds suited A2s-A5s, suited 54s-76s, suited K8s, Q8s, J8s, T7s, 97s, 86s, and offsuit KJ, QT, JT.
• BTN: Opening range approximately 30%-35%. Can include almost all suited connectors (32s+), suited one-gappers (e.g., 75s, 96s), all pairs, all suited aces, and some offsuit connectors (e.g., JTo, QJo).
• SB: Opening range approximately 25%-30% (note SB position is postflop disadvantaged). Range similar to BTN but exclude the weakest suited aces and low suited connectors.
• BB: Defending range very wide against SB open, typically about 50%-60%. Includes all pairs, all suited connectors, most offsuit connectors and aces.

3-bet Range (Example: Facing CO or BTN Open)

• Value 3-bet: Typically QQ+, AK, and some AQs, JJ (depending on opponent looseness). In deep stacks, can add more suited broadways (e.g., AQ, KQ) but with caution.
• Bluff 3-bet: Common hands include suited A5s, A4s, A3s, and some suited connectors (e.g., 76s, 87s). Avoid dominated hands like K8s.

Range Construction Logic

In deep stacks, the core principle is "playability" first. Suited hands and connectors are favored due to drawing potential; small pairs retain value for set-mining. The later the position, the wider the range. Opening ranges must balance strong hands with weak hands to prevent exploitation.

Adjustment Factors

• Opponent Style: If opponents 3-bet frequently, tighten opening range and increase 4-bet frequency; if opponents call too much, widen opening and c-bet ranges.
• Stack Depth: Beyond 300BB, suited connectors and small pairs increase in value due to higher implied odds; large pairs decrease in relative value (concern about being set-mined).
• Table Dynamics: If preflop squeezing is frequent, increase cold-calling range and reduce opening range.

GTO Reference

Theoretically, GTO preflop ranges have a linear structure: strong hands open, medium hands mix call or fold, weak hands partially open for balance. Specific ranges can be simulated via software (e.g., PioSolver), but simplify in practice. Typical balanced range: In UTG open, about 70% of hands are medium strength or above, 30% are weak (e.g., small suited connectors).

Practical Application

• Example 1 (UTG): Holding 55 in UTG, 200BB deep. Open per recommended range. Postflop, if you flop a set, you have huge potential to win a big pot; if flop is all low cards, you can c-bet or give up.
• Example 2 (BTN): Holding T9s on BTN facing UTG raise. Per range, can call or 3-bet as a bluff. In deep stacks, calling is more common to leverage position and drawing potential.
• Example 3 (BB): SB opens, holding K9s in BB. Defending range includes K9s, so call. Postflop, consider donk betting or playing aggressively on draws.