newbie_oops

Hi nick,

Am i right to assume that if he has 66,6x,AJ,AQ,JJ,QQ in his calling range. then his 3 bet range includes a lot of small pocket pairs and suited and unsuited broadways and KK+.
If so, his line of X/C, C/C, R is always going to be weighted towards nut hands, so that hands with which he gets to the river are always better than ATo as you suugested the slim possibility of him turning PP's into bluffs?

From what i understand of you labelling him as a LAG is in a respectful way.
Based on that, it is probable that he is calling a lot of suited connectors, middle pairs,middle and high jumpers( AQ, KJ, Q10 , J9 , and so on). 

Now he might call on the flop with made hands like TTP(very less probability as only 3 combos)/set of 9s( again only 6 combos) but these hands can be slightly discounted as their chances of hitting the flop are low and you would be facing a check-raise on this flop if they had these hands/ flush and straight draws are calling along with 9x

The 10 popping on the turn is not entirely a bad card. although JK and J8 reach there , there are whole other hands like 78d, AJd, Q10( 3 combos),9 10 ( 9 combos) for which the turn is an improvement and given his bet size is not particularly keen on drawing value from you. Shipping here again depends on effective stack sizes after he check-raises.(IMO you should be ahead mostly given his flop calling range).

On the river, since you avoided shipping it on the turn, this should be an indifferent call to the bet.