This is based of the assumption that the villain is tight and not overly aggressive. This is my default assumption when against a new player. But honestly without reads, it makes the exercise rather pointless, unless the point is to see where your default read is against new players.

2 overcards. AK/Q/J, KQ/J. This read doesn't change at all though the corse of the hand. I suppose he could have 77 or 66, but why show the aggression pre-flop if your not willing to test the waters post-flop

I guess the real question is why didn't he c-bet with that flop? Top pair being 8's, preflop play showing no higher than pocket 9's being held by hero and having 2 overcards not c-betting seems retarded in this instance. So if my villain is a moron (high probability at 10NL) then it's overcards. If he has any clue at all I would be thinking set/overpair at the flop. But the turn largely destroys that. Gotta be a twit to give a free card at that point with a made hand. The river just verifies that he is a moron with 2 overcards.

I dunno maybe I'm just tired