I was actually thinking that his hand range is TT-99 as overpairs, anything larger than JJ he would most likely 3B big pre. (6 combos)
Sets of 77,55,44 are possibility of course but then again he might not always 3B them on such a dry flop. (7 combos on turn)
Any hand that has a 6 is possibility.. 66, A6s, 86s, 76s, 65s, 64s or even 63s (16-20 combos)
So I thought I'm ahead of atleast 2/3 of hands he can possible have on the turn.
As I didn't know what else to do I called the turn
River was J
He bet 1800 on river. River card didn't really change anything.. I don't think JJ was ever in his range. So I called again.
He had 6
3
flopped straight.
Later talking to him, he said that he thought he is good and was value betting as he thought I'd just check down AA and KK there. And was quite happy he lost a minimum against me when we both hit a straight.. if I had re-raised on flop all would have been in middle.