Bet Sizing

Geometric sizing to set up turns and rivers correctly.

Bet sizing is one of the most underestimated skills in poker. The wrong size — even with the right action — leaks value or offers opponents favourable odds to beat you.

Geometric bet sizing example

Pot: 100 on flop, 100 effective stack remaining
Goal: get all the chips in by the river in 2 bets
Flop bet: 33% = 33 → pot becomes 166
Turn bet: 60% = 100 → pot = 100, stacks = 0
→ Both streets committed, pot maximised

Size to your range: Large bets (75–100% pot) should accompany polarised ranges (strong hands + bluffs). Small bets (25–40%) suit merged ranges (many medium-strength hands). Mixing sizes without logic is exploitable.

On the river, size to maximise value vs your specific opponent. Against a calling station, bet bigger with value. Against a tight player, a smaller bet may get more calls from marginal hands.

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