Late in a Daily Double (FTP), JJ and a big stack.

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Does anyone like a 3 bet preflop here? That would at least give you an opportunity to tighten villains range a little more. 20 hands is a pretty small sample size and the fact that he has shown only KK may only mean he has a been a little card dead for a few orbits. You may catch him raising with QJs or KQs something like that and he folds to a 3 bet. On that flop you are beating a lot more hands than TT. Depending on his range you are beating 77,TT,AJ+,KJ+. I agree that as played the turn is a definite fold. I think I would've liked to see a 3 bet preflop.