medium · Poker Theory Preflop

Game: No-Limit Hold'em | Format: Cash Game | Blinds/Antes: 1/2, no ante | Effective Stacks: 100 bb | Hero Position: SB | Pot Size: 3.5 bb | Scenario: You are in the Small Blind and it is folded to you. You choose to 3-bet a 6 (3 bb) open from the Button. According to standard theory, why should your out-of-position 3-bet be sized larger (e.g.,9 bb to $11 bb) than an in-position 3-bet?

1. You have already invested 1 in the Small Blind, so you must bet more to 'protect' your existing investment. (under this line)
2. A larger sizing reduces the SPR and discourages the Button from realizing their positional advantage over multiple streets.
3. The Button's range is wider, so you can extract more value by charging them a higher price to see the flop.
4. A larger sizing ensures you win more chips immediately since you are unlikely to win at showdown.

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