Opening Ranges by Stack Depth: Deep vs Short
Stack depth reshapes your opens: deep stacks favor suited connectors; short stacks favor high cards. Here's a by-depth chart and the logic.
On this page · 7 sections
Stack depth changes which hands you should open, not just how many. When stacks are deep, you favor hands that can win a huge pot — suited connectors, small pairs, suited aces — because there’s real money behind to win when they hit. When stacks are short, you shift toward raw high-card strength like big offsuit broadways, because you’ll rarely see enough streets to realize a draw. The standard 100bb chart is a middle point; below is how to adjust in both directions.
Why depth reshapes hand value
Every starting hand has two sources of value: raw equity (how often it’s ahead right now) and implied odds (how much you can win when it improves). Stack depth changes the balance between them.
- Deep stacks amplify implied odds. A hand like
6♠ 5♠is a modest holding by raw equity, but when it flops a straight or flush against a big pair, deep stacks let you stack your opponent. That upside is only real if there’s money behind. - Short stacks flatten implied odds. With 25bb behind, even flopping the nuts can’t win a huge pot — there simply aren’t enough chips. So the hand’s current strength matters most, which favors high cards that make top pair.
This is why the same 6-5 suited that’s a fine deep-stacked open becomes a fold when stacks get shallow, while A-J offsuit moves the opposite direction.
An opening chart by stack depth
Use your standard 100bb RFI ranges as the anchor and shift from there. This shows how a cutoff opening range tilts as depth changes:
| Depth | Style | Add to range | Cut from range |
|---|---|---|---|
| Deep (150bb+) | Implied-odds heavy | Suited connectors, suited gappers, small pairs, suited aces | Weak offsuit broadways |
| Standard (100bb) | Balanced baseline | — | — |
| Medium (40–60bb) | High-card leaning | Big offsuit broadways | Small suited connectors, suited gappers |
| Short (under 40bb) | Raw strength / shove-heavy | Big pairs, big aces, high broadways | Speculative suited/connected hands |
Deep-stacked opening: play the hands that stack people
At 150bb+, the reward for connecting is enormous, so lean into hands with big upside:
- Suited connectors and small pairs climb in value — they flop disguised monsters and win stacks.
- Suited aces gain because the nut flush is worth more when there’s a full stack to win behind it.
- Offsuit hands with poor connectivity (like K-9 offsuit) drop — they make one-pair hands that win small and lose big out of position.
Position matters even more when deep: playing a big pot out of position with 200bb behind is where the worst spots come from. Deep, tight, and in position is the profitable combination — a core idea in cash-game strategy.
Short-stacked opening: value your high cards
Under ~40bb, implied odds shrink and variance rises. Adjust by:
- Cutting speculative hands. 7-6 suited and small suited gappers lose their reason to exist — they can’t win a big enough pot to justify missing most flops.
- Adding high-card equity. A-J offsuit, K-Q offsuit, and big pairs gain because they win the medium pots that short stacks actually produce.
- Simplifying sizing. Very short, opens often collapse into open-shoves or small raises. The full push/fold framework lives in short-stack strategy, and the sizing logic is in our open-raise sizing guide.
A worked example
You hold 6♠ 5♠ in the cutoff, folded to you.
- 200bb deep: a clear open. If you flop a straight or flush draw, the deep stacks mean you can win an entire buy-in when it comes in. Strong implied odds justify a hand that’s mediocre by raw equity.
- 30bb deep: a fold (or at best a rare, table-dependent open). You’ll miss the flop two times in three, and even when you hit, there aren’t enough chips behind to make the payoff worth the misses. The pot odds and implied odds that carried the hand deep simply aren’t there.
Same hand, same seat — depth alone flips the decision.
Common stack-depth leaks
- Opening the same range at every depth. Playing your 100bb chart at 30bb over-values speculative hands.
- Chasing implied odds when short. Calling and opening for the “big pot” that a short stack can never produce.
- Playing too many hands deep and out of position. Deep stacks punish positional mistakes hardest.
- Ignoring the stacks behind you. Your effective stack is the smallest one in the hand — a deep stack means nothing if your opponent is short.
Where to go next
Depth is a modifier on your baseline. Lock in your standard opening ranges first, then adjust sizing with open-raise sizing, and connect it all to bankroll and game selection in cash-game strategy. The full framework starts at the preflop strategy hub.
Frequently asked
How does stack depth change my opening range?
Deeper stacks reward hands that can win big pots — suited connectors, small pairs, suited aces — because their implied odds are higher. Shorter stacks reward raw high-card strength like big offsuit broadways, since you rarely see enough streets to realize a draw.
What is considered deep-stacked in poker?
Roughly 150bb and above is deep, 100bb is the standard baseline, and under about 40bb is short. Exact cutoffs vary, but the strategic shifts scale smoothly as stacks get deeper or shallower.
Do I open tighter or wider when short-stacked?
Slightly tighter in raw hand count, and skewed toward high-card hands. With less money behind, you can't profitably chase implied-odds hands, so speculative holdings like 6-5 suited lose value while A-J offsuit gains it.
Should I change my raise size with stack depth?
Sizing is driven more by table dynamics than depth, but deep games sometimes use slightly larger opens to build pots with strong hands, while very short stacks lean toward smaller opens or open-shoves.