Concept
SPR is the stack left divided by the pot
Use the effective stack that can still be won after preflop action. If 24bb remains and the flop pot is 12bb, the SPR is 2. If 96bb remains and the flop pot is 12bb, the SPR is 8.
No-Limit Hold'em curriculum
Stack-to-Pot Ratio Planning
Build preflop sizes, flop bets, and stack-off plans around the amount of money left to play. SPR turns vague hand strength into a practical street plan.
SPR
Core framework
Start every postflop plan with pot geometry
Stack-to-pot ratio is not a solver shortcut. It is the pressure gauge that tells you whether a hand wants one street, two streets, or a full stack before the flop action has even finished.
Commitment
Low SPR turns equity into stack-off value
At SPR 1-3, overpairs, top pair strong kicker, pair-plus-draw, and strong combo draws often prefer direct value and protection because future fold decisions are compressed.
Depth
High SPR rewards nut potential and position
At SPR 8 or higher, dominated one-pair hands lose value while suited aces, pairs, and connected suited hands gain implied odds from making disguised nutted hands.
SPR thresholds
Let the number define how fragile one pair is
These bands are planning thresholds, not automatic rules. Use them to decide which hand classes can welcome pressure and which ones need position, pot control, or clearer improvement.
SPR
SPR 0-1.5
Forced decision zone
Jam or call off with hands that were strong enough to create the pot preflop.
Caution
Do not arrive here with speculative hands that needed fold equity or implied odds.
SPR
SPR 2-3
Commitment zone
Plan stack-offs with overpairs, top pair top kicker, strong top pair, and high-equity draws when ranges support it.
Caution
Board texture still matters. Sets, two pair, and nut draws can own more equity than a low number suggests.
SPR
SPR 4-7
Two-street planning zone
Choose flop sizing that leaves a clean turn shove, or size smaller when the hand wants pot control.
Caution
One pair can value bet, but turn raises and bad runouts become meaningful again.
SPR
SPR 8-12
High-pressure zone
Use position, range advantage, and nutted coverage before building a three-street pot.
Caution
Top pair weak kicker and overpairs out of position face reverse implied odds.
SPR
SPR 13+
Deep implied-odds zone
Favor hands that can make sets, straights, nut flushes, and disguised two pair.
Caution
Avoid stacking one pair against ranges that can credibly raise for stacks on later streets.
Preflop sizing
Build the pot your hand wants to play
Opens, 3-bets, 4-bets, squeezes, and calls are SPR decisions. A bigger preflop size lowers future SPR and helps one-pair value hands. Smaller sizes and flats preserve room for hands that need implied odds or turn-card information.
30bb-45bb
Open 2.0bb-2.3bb and 3-bet linearly with hands that tolerate low SPR flops.
A called 3-bet often lands near SPR 2-4, where top pair and overpairs can commit on clean boards.
70bb-110bb
Open 2.3bb-2.7bb, 3-bet around 3x in position and closer to 4x out of position.
Single-raised pots stay high SPR, while 3-bet pots create medium SPR plans for AK, QQ-JJ, and suited Broadway value.
150bb-220bb
Avoid bloating dominated offsuit hands, size larger out of position, and protect deep ranges with suited nut equity.
The goal is not always a lower SPR. Deep stacks reward position and hands that can win a stack when they improve.
Flop commitment
Know which flop bet makes the stack go in
A flop bet that leaves less than a pot-sized bet behind on the turn is already asking whether your hand can commit. Run the calculation before you choose a continuation-bet size.
Commitment rule
Before betting, calculate pot after bet-call and divide the remaining stack by that pot.
Commitment rule
If the turn SPR will be below 1, the flop bet is a commitment decision, not a harmless continuation bet.
Commitment rule
Commit faster when the opponent continues worse one-pair hands or dominated draws.
Commitment rule
Keep room when your bet folds worse hands, gets raised by better hands, or leaves weak equity on dynamic turns.
Practical examples
The same hand class changes with stack depth
Advanced SPR work is comparison. A low-SPR overpair can be a value stack-off, while the same overpair in a deep single-raised pot may need smaller bets, protected checks, and more respect for raises.
NL
Worked spot
40bb 3-bet pot with AK
Hijack opens 2.2bb, button 3-bets to 6.8bb, hijack calls. The flop pot is about 16bb with 33bb behind, creating SPR 2.
Plan
On A-8-4 rainbow, bet 5bb-6bb intending to call off or jam clean turns. The hand class and low SPR support value commitment against worse Ax and stubborn pairs.
NL
Worked spot
100bb single-raised pot with AA
Cutoff opens 2.5bb, big blind calls. The pot is about 5.5bb with 97.5bb behind, creating SPR near 18.
Plan
On T-7-4 two-tone, bet for value and protection, but do not treat one pair as an automatic stack-off. Large turn raises need range comparison against sets, two pair, straights, and combo draws.
NL
Worked spot
180bb button call with 87s
Cutoff opens, button calls, blinds fold. The flop is T-9-3 with a backdoor flush draw and SPR above 25.
Plan
Call or raise selectively in position. Deep SPR makes implied odds valuable, but the pressure plan should target turns that add open-enders, flush draws, or credible nut pressure.
Practice exercises
Calculate SPR, choose the line, then compare outcomes
Use these exercises as short hand-review prompts. Write down the effective stack, pot, SPR, flop size, and next-street plan before looking at the expected outcome.
DR
Exercise
28bb button 3-bet pot
Cutoff opens 2.2bb, button 3-bets AQs to 6.5bb, cutoff calls. Flop Q-9-5 two-tone, pot 15bb, stacks 21.5bb. Choose flop size and turn plan.
Expected outcome
Expected outcome: bet 4bb-5bb and continue against most jams. SPR is about 1.4, so top pair strong kicker is a value-commit hand unless villain is extremely nutted.
DR
Exercise
75bb blind-defense pot
Button opens 2.5bb, big blind calls KJs. Flop J-8-4 rainbow, pot 5.5bb, stacks 72.5bb. Plan against a button who barrels too many overcards.
Expected outcome
Expected outcome: check-call flop often, review turn cards, and avoid turning one pair into a stack-off before villain's range is capped or the board stays clean.
DR
Exercise
110bb 4-bet pot
Hijack opens, cutoff 3-bets, hijack 4-bets KK, cutoff calls. Flop T-6-2 rainbow, pot 45bb, stacks 82bb. Decide between small bet, shove, and check.
Expected outcome
Expected outcome: bet small to keep worse pairs and floats in. The SPR is below 2, so the pot is already large enough to reach stacks by the river.
DR
Exercise
190bb suited connector spot
Cutoff opens, button calls 87s, blinds fold. Flop T-9-3 with a backdoor flush draw. Pot 6bb, stacks 187bb. Pick a pressure plan against a tight opener.
Expected outcome
Expected outcome: call or raise selectively with position. Deep SPR rewards nutted turn coverage more than immediate stack pressure.
Advanced review standard
Peer-reviewed by advanced NL players through a repeatable checklist
Strong reviewers should be able to reproduce the plan from the numbers alone. If two advanced players disagree, the disagreement should be about ranges, board texture, or exploit assumptions, not about missing stack geometry.
Review checkpoint
Math check: effective stack, flop pot, flop SPR, and remaining SPR after each planned bet size.
Review checkpoint
Range check: worse hands that continue, better hands that raise, and draws that can profitably stack off.
Review checkpoint
Texture check: dry boards where one pair keeps value versus dynamic boards where equity shifts quickly.
Review checkpoint
Exploit check: whether the opponent over-folds pressure, over-calls one pair, or under-bluffs missed draws.
Practice tools
Connect SPR planning to the rest of your NL study
Drills
Practice stack-size decisions
Filter scenarios by stack depth, position, and board texture until the SPR calculation is automatic.
Ranges
Check who owns the nutted region
Compare range advantage before turning a medium or deep SPR hand into a large-pot bluff or value line.
Geometry
Run bet-size geometry
Test flop and turn sizes to see whether your line creates a clean river shove or an awkward remaining stack.