AJs in BB approaching $55 final table as bigstack

[illegit]

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If the opponent has less than an Ace or a weak Ace and is unpaired, then I'm a pretty large favorite and I don't want to push him off the pot without extracting some penalty from him. This is especially true if he raised with something like A9 or A8.

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The main problem with this is A) He is the preflop agressor and B) He has position. So if neither of you flops anything (and your AJ high is still the best hand) he's still going to win the pot more often because of his favorable position and you not being certain where you're at. Push neutralizes this positional advantage.