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Implementing the GTO Ranges for Calling large opening bets

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  • Implementing the GTO Ranges for Calling large opening bets

    I just watched the Fixing 25 Biggest Leaks course and have a question about using the ranges provided in the GTO Charts. Sometimes a table in a tournament (or cash) will have some players opening very large (say 5 to 10 big blinds) When I look at the charts I'm wondering if we should adjust to a tighter calling range. And if the chart says to 3bet for value or as a bluff it will typically now be 30% of my stack so should we then convert a 3bet for value or bluff to an All In range? I usually am suspicious of a player who opens so large consistently with all their hands. I usually try to do the opposite of what my opponent is trying to get me to do (like fold good hands pre-flop) with their very fishy open sizes. Has anyone here experience this issue with facing consistently larger than normal RFI bets? If you use the GTO charts, how did you adjust?

  • #2
    Our calling range is determined by our pot odds.

    Let's take an example of us being in the BB.

    If the BTN opens to 2bb then our pots odds are: 1 / ( 1 + 1 + 0.5 + 2 ) = 22%.

    This means we should be looking to defend with all our hands that will realise equity of >22%.

    If the BTN uses a large open size, for example 10bb, then this is how the pot odds are affected:

    9 / ( 9 + 1 +0.5 + 10 ) = 44%.

    This means we should now be defending with all our hands that will realise equity of >44%.

    As you can see we need much stronger hands to defend against a larger open so yes, our adjustment to a large opening size is to tighten our defending range.

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