Definition
SPR is the effective stack size divided by the pot size, indicating how ‘deep’ stacks are relative to the pot.
SPR (stack-to-pot ratio)
Effective stack divided by pot size at the start of a street.
Key points
- Lower SPR makes one-pair hands stronger and simplifies decisions.
- Higher SPR increases implied and reverse implied odds.
- SPR informs bet sizing, commitment, and draw profitability.
Common misconceptions
Myth
SPR is only for tournament play.
Reality
It’s useful in cash games too.
Myth
SPR replaces equity calculations.
Reality
It complements them; it doesn’t replace them.