Thinking in Ranges, Not Hands

Amateurs ask 'what does he have?' Winners ask 'what's his whole range here — and how does my hand do against all of it?'

Why you must think in ranges

You can almost never know an opponent's exact two cards. But you can estimate the set of all hands they'd play this way — their range — and make decisions against that whole set. This shifts you from guessing to math: you can ask what percentage of their range you beat, and play accordingly. It's the mental upgrade that defines strong players.

Building a range

Start preflop. If a tight player raises from early position, their range might be pairs 99+, A-Q+, and a couple of suited Broadways — maybe the top 8% of hands. A loose button open could be 50% of hands. From that starting point, every action narrows or shifts the range.

Ranges aren't fixed — they're conditional. 'A tight reg who 3-bets the river' is a far stronger range than 'a tight reg who checks the river.' Always update based on the line they've taken.

Narrowing it street by street

As the hand develops, prune hands that wouldn't take the actions you've seen:

  • Flop: on K♠8♦3♣, a player who calls a bet likely has a king, a pair, or a draw — you can remove most total air.
  • Turn: if they keep betting big, weak pairs start dropping out; the range polarizes toward strong hands and bluffs.
  • River: now compare your hand to what's left. If you beat most of their value range and they bet small, it's often a call; if the range is all strong hands, fold.

This is the engine behind hand reading and the foundation of GTO thinking.