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The raise looks too big for me to be AA or KK

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The raise is a perfectly standard pot-sized raise. And it reveals absolutely nothing about this player's holding. He has something as he doesn't steal with trash hands.

People seem to be advocating a push !
Why would you overbet the pot and push in 5200 to win 1000 ?
This hand was discussed at length later, and the only options considered were to either call or raise a pot-sized amount.