Pocket nines, middle position, 100 big blinds deep. In a $2/$5 cash game we open to $15, get one call, see a J-8-3 rainbow flop, and play poker. Same hand in a $200 buy-in tournament with 35 big blinds left and a pay jump four spots away? The right answer might be fold preflop. The hand didn't change. Everything around it did.
Tournament poker punishes cash-game habits more than almost anything else. The cards are the same, the rules are the same, but four structural differences — blinds, stack depth, rebuys, and prize structure — turn it into a different game. Here's what actually changes.
The blinds always go up
In a cash game the blinds are fixed forever. $1/$3 today is $1/$3 next year. Your job is to find spots, play them well, and walk away when you're tired. There's no clock.
In a tournament the blinds rise on a schedule — usually every 15, 20, or 30 minutes. A typical $200 live MTT might start with 20,000 chips at 100/200 blinds (100 big blinds deep) and end Level 1 at 200/400. Two hours in you might be at 1,000/2,000 with antes. The same 20,000 chips that bought you 100 big blinds at the start now buys 10. You haven't lost a hand. You're just shorter.
This single fact — that doing nothing makes you shorter — drives most of the strategic difference. Patience is a tax in tournaments. Folding every hand for two orbits in a cash game costs you the blinds plus a small amount of expected value. In a tournament it costs you blinds, antes, AND the relative position of your stack as everyone else's also shrinks but more slowly because they're playing more pots.
You don't get to reload
In cash, if you stack off and lose, you reach for your wallet, rebuy to the cap, and play the next hand. The skill of choosing when to put your money in matters, but the choice of "is this a spot where losing means losing the game" never comes up.
In an MTT (after the late-registration period ends, anyway) every chip you bet is a chip you can't put back. Bust and you're out. This makes some cash-game lines very wrong:
- Light 4-bet bluffs that work because the cash villain can call wide knowing they'll reload — bad in a tournament where they're playing for their life
- Bluff-shoves on the river when you only beat air — these have to be PERFECT in a tournament because the cost of being wrong is the entire game
- "I'm not folding ace-king preflop" — fine for $5 in a cash game; sometimes very correct in a tournament when shoving means everyone-or-nothing
The asymmetry is brutal. In cash, doubling up is +$1,000. In a tournament, doubling up early is worth less than doubling your chips because of how the payout curve works (more on this in a minute). And busting is worth the entire negative buy-in, not just the chips you lost in the hand.
Stack depth changes the game every level
Most cash games are 100 big blinds deep or deeper. Strategy at 100 BB is mature and well-studied — open, c-bet, value-bet, balance your range. You can play "poker" the whole time.
Tournament stack depth shifts every 15 minutes:
| Effective stack | What changes |
|---|---|
| >100 BB (early) | Plays like deep cash. Implied odds matter; speculative hands have value. |
| 50-100 BB | Cash-like but pots commit faster. 3-bet/4-bet wars get common. |
| 25-50 BB | Postflop play shrinks. Open-raise sizing tightens. Stack-to-pot ratio drops fast on the flop. |
| 15-25 BB | Push/fold ranges become the dominant framework. Open-shoves and resteals from the blinds. |
| <15 BB | Strict shove-or-fold preflop. No more limping, no more standard opens. |
You'll cycle through some or all of these depths in a single tournament. Knowing which game you're playing right now matters as much as knowing what cards you hold.
The endgame is mathematically different
In a cash game every $1 you win is worth $1 in your pocket. Linear. In a tournament every chip you win is worth slightly less than the chip before it, and the gap widens as you get closer to the money.
This is what ICM — the Independent Chip Model — describes. The short version: as the pay jumps stack up (final table, then bigger jumps to the top spots), the equity value of an extra chip drops while the equity cost of losing your stack climbs. A 50/50 coinflip for chips is +EV in chips and -EV in dollars in a lot of late-tournament spots. The right play late in a tournament is often to fold a hand that you'd happily 3-bet in a cash game, because the math of survival outweighs the math of equity.
If you're brand new to ICM, expect to bookmark it and come back. We wrote a separate post explaining how ICM works and when it should change your decisions — but for now, just internalize that "the right play in cash" and "the right play late in a tournament" are often different even when the hand is identical.
Variance is much worse
Cash-game variance is measurable. A solid winning player in a soft mid-stakes cash game might run at 5 BB/100 with a standard deviation around 100 BB/100. After 10,000 hands you've usually got a clear picture of whether you're winning, even if the size of your edge is still fuzzy.
Tournament variance is much worse. The payout curve concentrates ROI in the top few finishes. Most MTT players have a long-run ROI between 10% and 30% but cash in only 10-15% of tournaments, deep-run in 2-3%, and final-table in well under 1%. You can play technically perfect tournament poker for six months and lose money. Twelve months is a small sample.
Practical implication: your tournament bankroll should be much larger relative to buy-in than your cash bankroll relative to stake. Most pros recommend 100+ buy-ins for the main format you play. If you're moving from $1/$2 cash games to $100 MTTs, the "I can afford 20 buy-ins" math you used in cash doesn't apply.
A starter playbook
Three habits that close the gap fastest for cash-game players entering tournaments:
1. Tighten preflop in early position; widen on the button. Position matters more when stack depth is shifting and the pay structure punishes mistakes. Open J-T suited from UTG in cash; fold it in a tournament UTG with anyone behind you who might 3-bet.
2. Track stack depth in big blinds, not chips. 50,000 chips is a meaningless number. 12 big blinds is push-or-fold. 35 big blinds is reshove range from the blinds. The display tells you the chip count; you have to do the BB math in your head every level.
3. Respect the bubble. The hands that get you to the money and the hands that get you to the final table are not the same. Bigger pay jumps mean more folding, not more aggression. The opposite of what your cash-game brain wants to do.
None of this is hard to understand. All of it is hard to actually do under pressure when your stack is shrinking. The fix is the same one we always come back to — log every tournament, look at the hands you played in each stack-depth zone, and find the leak before it costs you another buy-in.
PokerCharts' tournament tracker breaks out your tournament results by buy-in, structure, and finish position, and lets you spot which kinds of tournaments are actually +ROI for you and which are eating your bankroll. Free for your first 10 sessions.