[MrTeddyKGB]

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What range do you put him on? On the river I was thinking he wouldn't have played just a K or Q that way (especially leading into me again on the river after my calls), so I figured I was up against a bluff or at least 2pair. Of course, I could be wrong.

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Why not he my just want to define the hand if he has AK or AQ or KJ or K10 he is going to like his hand. What hand do you put him on that would not cap the flop but can now beat AA. plus your hand is way underrepresented. If you capped the flop and he still bet then maybe a call down is in order.