Lesson
Deriving the MDF Stack-Off Formula from SPR
MDF & Indifference · intermediate · 9 min
Tyler walks Eric through using SPR as the first step in deciding which hands can stack off on the flop in a live 3-bet pot. The lesson shows how to calculate the minimum stacking threshold, build a plausible live calling range, and connect that threshold to specific board textures.
Key takeaways
- Start by identifying the SPR before deciding whether a hand is strong enough to stack off.
- Use SPR / (SPR + 1) as the minimum threshold: at 10 SPR the cutoff is about 90.9%, and at 20 SPR it is about 95.2%.
- In live 3-bet pots, include wider calls such as pocket pairs, suited aces, some Ace-King, and suited connectors when building the opponent's range.
- Use board texture and the opponent's range to pre-plan which hands are stack-off candidates instead of reacting in-game.
- At 10 SPR on a middle-low board, Tyler identifies top kicker or better as stackable against the discussed wide calling range.