medium · Poker Theory Preflop

Hero holds A♣ 5♦ in the Big Blind vs a Button open. Why does this hand realize its equity poorly (EqR < 1.0) compared to 8♠ 7♠?

1. Because A5o blocks the Button's folding range.
2. Because A5o has lower raw equity against the Button range than 87s. (under this line) (under this line)
3. Because its equity is diffuse, leading to dominated top pairs that must pay multiple streets.
4. Because A5o cannot flop a flush draw.

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