medium · Poker Theory Preflop
Context: You are constructing an opening range for a standard 6-max game. Why is A9o typically excluded from this position's Raise-First-In (RFI) range while being included on the Button (BTN)?
- The hand suffers from diffuse equity and frequently makes dominated top pairs that struggle out of position.
- The raw equity of A9o decreases significantly when more players are left to act behind you.
- The combinatorics of A9o (12 combos) make it too likely that someone behind holds a stronger Ace.
- It is better to fold A9o to preserve a tight table image for later bluffs.
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