Stack-to-Pot Ratio (SPR) Tutorial

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What is Stack-to-Pot Ratio (SPR)?

SPR is the ratio of the effective stack size to the pot size at the start of a betting round. It helps determine how committed you should be to a hand.

Why is SPR Important?

  • Helps determine when to commit with a hand.
  • Guides post-flop decision-making based on stack depth.
  • Prevents overcommitting with weak hands in deep-stacked situations.

How to Calculate SPR?

SPR is calculated using the following formula:

SPR = Effective Stack Size / Pot Size

SPR and Commitment Levels

Different SPR values indicate different commitment levels:

SPR Range Commitment Level Example Hands
0-2 Very High Commitment Top pair, overpairs, bottom two pair
3-6 Moderate Commitment Top two pair, sets, strong draws
7+ Low Commitment Nut hands, cautious play recommended

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Frequently Asked Questions about SPR

SPR uses effective stack size to measure depth: smaller stacks mean lower SPR and simpler all-in spots.

Low SPR (0-2) is best for overpairs like Aces since it allows easy commitment post-flop.

Yes. Larger preflop raises reduce SPR, simplifying post-flop play. Smaller raises keep SPR high for deeper strategy.

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