In chapter 4 of PLO From Scratch, Bugs develops a structured framework for 3-betting and defending against 3-bets in 100BB 6-max games, linking preflop planning directly to postflop execution in big pots.
Purpose of the Chapter
This chapter, together with the next, completes the preflop foundation and begins the transition into postflop strategy. The focus is on 3-bet pots—how to build them correctly, how to play them after the flop, and how to respond when facing a 3-bet yourself.
Because mistakes in big pots are costly, the emphasis is on disciplined thought processes rather than memorizing fixed rules.
Macro Principles for Playing Big Pots
1. Preflop “Master Plan”
Before 3-betting, you should know why you are inflating the pot. A 3-bet should be driven by at least one of two reasons:
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You hold a hand that connects well enough with many flops to continue profitably.
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You expect increased steal equity preflop or postflop.
If hand quality is weak, strong steal equity must compensate. If steal equity is limited, strong flop connectivity becomes essential.
2. Postflop “Master Plan”
Once you create a big pot, you cannot afford to play passively. Folding too often after investing heavily preflop is a major leak. In low stack-to-pot ratio (SPR) situations, you must be willing to commit with relatively light holdings compared to small pots.
In large pots, postflop decisions become more mathematical and often resolve on the flop. The deeper the stacks relative to the pot, the more caution and implied-odds considerations matter.
Stack-to-Pot Ratio (SPR) as a Guiding Tool
Bugs formalizes the distinction between “big” and “small” pots using SPR:
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Ultra-low SPR (<1): simple pot-odds decisions; stack off lightly.
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Low SPR (<4): often raise-or-fold territory.
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Medium to High SPR (4+): more room for multi-street maneuvering.
The lower the SPR, the more willing you must be to continue with non-nut hands. The higher the SPR, the more cautious you must be about domination and negative implied odds.
3-Betting: Value, Speculative, and Bluff
Bugs retains the three conceptual categories introduced earlier.
Value 3-Betting
This includes premium AAxx, strong Broadway structures, and high pairs with coordination. These hands:
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Connect frequently and robustly with flops.
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Can withstand aggression in low SPR environments.
A key addition: even weaker AAxx hands can be 3-bet profitably against short stacks or in situations where enough of the stack goes in preflop to create an ultra-low SPR. In those cases, postflop becomes mechanically favorable.
However, this logic weakens when stacks are deeper and side cards matter more.
Speculative 3-Betting
Good suited rundowns and suited ace-rundown combinations fall into this category. These hands rely more on circumstances:
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Preferably in position.
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Preferably against opponents who play predictably after being 3-bet.
With position, speculative hands can:
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Take free cards when appropriate.
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Apply pressure when opponents signal weakness.
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Balance checking ranges to prevent exploitation.
Position is highlighted as a major asset when managing marginal but live holdings.
Bluff 3-Betting
This involves widening your range further to exploit favorable situations:
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Loose openers.
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Tight blinds.
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Predictable postflop opponents.
On dry boards that are hard to connect with, continuation betting as a pure bluff is often sufficient. However, unlike speculative 3-bets, these hands usually have little improvement potential, so the plan is straightforward: bet once and fold if resisted.
Bet sizing and balance remain important to avoid telegraphing weakness.
The Danger of 3-Betting Weak AAxx (Especially Out of Position)
A major section warns against routinely 3-betting poorly coordinated AAxx hands, particularly out of position.
Key problems:
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The hand becomes transparent—opponents assume AAxx.
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Weak side cards reduce postflop equity when the flop misses.
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Being out of position forces frequent continuation betting.
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Opponents gain implied odds and can exploit predictable aggression.
Through a model using flop equity distributions, Bugs demonstrates that:
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Premium AAxx hands are difficult to exploit, even with perfect information.
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Weak AAxx hands can be exploited profitably by wide ranges, even when the opponent knows he faces AA.
The conclusion is firm: habitually 3-betting poorly structured AAxx out of position with 100BB stacks is strategically flawed.
Playing Against a 3-Bet
The chapter then shifts perspective.
With AAxx, 4-betting is generally correct (discussed more fully in the next chapter). The focus here is on which non-AAxx hands to call or fold.
Hands to Fold: Dry Pairs and Weak Axxx
Two categories perform poorly in 3-bet pots:
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Pairs with bad side cards.
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Speculative ace-heavy hands with little coordination.
These hands:
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Miss flops too often.
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Struggle in low SPR environments.
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Depend heavily on implied odds.
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Perform poorly against AAxx and strong balanced ranges.
Although simplified models may show marginal profitability under perfect conditions, real-world imperfections (lack of perfect information, opponent adjustments, positional dynamics) make these calls unattractive.
The practical advice: fold them.
General Principles for Calling 3-Bets
Call More Often in Position
Position improves:
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Pot control.
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Equity realization.
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Steal opportunities.
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Ability to exploit frequent continuation betting from out-of-position players.
Call More Often Against Weak Opponents
Players who:
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Overplay AAxx.
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Mismanage stack sizes.
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Use unbalanced postflop lines.
These tendencies increase implied and steal equity.
Call More Often Against Well-Defined Ranges
If an opponent only 3-bets AAxx, your task becomes simpler. With clear information, speculative hands can profit by outflopping predictable aces.
Against Tight 3-Betting Ranges (Mostly AAxx)
When opponents 3-bet very rarely (around the natural AA frequency), you can:
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Fold dry pairs and weak Axxx.
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Call with coordinated, suited speculative hands.
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Play mostly fit-or-fold postflop.
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Exploit predictable c-betting patterns.
Position enhances this strategy considerably.
Bluffing flops without credible equity is discouraged when stacks are shallow and leverage is limited.
Against Loose, Balanced 3-Betting Ranges
This is a more difficult environment.
Balanced ranges include:
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Strong AAxx.
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Premium Broadway hands.
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Coordinated speculative hands.
Such ranges:
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Hit many flops.
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Dominate weaker speculative holdings.
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Avoid overcommitting with poor equity.
Against this type of opponent:
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Tighten your calling range.
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Avoid marginal speculative hands that create coin-flip scenarios.
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Be cautious about committing with dominated equity.
The chapter emphasizes preventing marginal preflop calls that lead to costly 55/45 or 60/40 postflop spots.
Core Takeaways
Chapter 4 reinforces several themes:
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Big pots demand preflop foresight.
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Low SPR requires willingness to commit lighter.
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Position dramatically increases postflop profitability.
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Weakly structured AAxx hands are dangerous to overplay.
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Dry pairs and speculative Axxx are poor candidates for defending against 3-bets.
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Calling standards should widen against tight, predictable ranges and tighten against balanced, competent ones.
Overall, Bugs presents 3-bet pots as largely governed by structure, SPR, and equity distribution. Sound preflop planning simplifies postflop decisions, while careless range construction creates difficult and expensive situations.