Don't let small bets push you off A-high when the board texture remains static and the price is excellent.
Flop Analysis
Calling is mandatory here. CO's tiny 1/5 pot sizing gives us an incredible price to see a turn with our overcard and backdoor potential.
**Ranges:** CO has a massive nut advantage with AA/KK, but their range also contains many AK/AQ combos that we currently beat or flip against. By betting small, they are range-betting their entire 4-betting frequency.
**Math:** We are getting 5.1:1 on a call, meaning we only need ~16% equity. Our A-high and backdoor flush draw easily clear this threshold against a polarized 4-betting range.
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> **Takeaway:** On dry, paired boards in 4-bet pots, A-high is too strong to fold against small 'click' bets.
Turn Analysis
Folding here is a slight over-fold. While the board trips up, the relative hand strengths haven't changed, and the price remains too good to pass up.
**Ranges:** The third deuce is a total brick. It doesn't help the 4-bettor's range (which is mostly overpairs and big Ax) and it doesn't help ours. We are still essentially bluff-catching against their AK/AQ and total air.
**Math:** Getting 4.4:1, we need 18.5% equity. At NL10, players are often tighter, but if they have any 'air' or are over-valuing hands like KQ/AQ, we have the required equity to continue.
**Sizing:** The 1/4 pot bet on the turn often looks like a 'blocking bet' or a thin value bet from an overpair. However, it also allows us to realize our equity cheaply with a hand that still has showdown value.
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> **Takeaway:** When the board doesn't change and the opponent continues with tiny sizing, trust your A-high as a bluff-catcher.
Note: Folding A-high for this price is too tight; we need to defend more of our range against such small sizing to avoid being exploited.