[RyanCMU]

Calling river would be nuts.

We don't know anything about him, he could definatly have checked the turn w/ 2pair or a set, not to mention the times he has Axhh (AhJh?), J7s.

I just think that vs unkown, its a little to much to assume that they are making a move like this.

Something else, I want to add.. We don't know anything about him again, so he could have coldcalled PF w/ QQ or JJ and in that case, I think we need to bet this turn, as its a great card vs that range, alternatly we charge his flushdraws and his weaker pair hands like J7s from getting a free twopair river, in which case they probably aren't going to pay off a river bet anyway w/ the A out there even if we check the turn.

By checking the turn, you are giving up control of the hand. The samll value we give up vs mid pocket pairs that are folding for sure now, is not worth the hassle of potentially putting us in a bad spot on the river.