[Guruman]

the only hand you possibly beat on the river UI is a busted flush draw, and the only way to extract from that hand is to check and hope he bluffs. I'd consider that hand and sequence of events to be far less likely than a pair that's calling down.

Also, a tag has a lot of aces in his range here, none of which he's folding on the river if he called the turn.

With that in mind, I think we can bet this river when we spike and check/fold when we whiff. The rare times he has KT[img]/images/graemlins/heart.gif[/img] do not make up for the times he has A9o and would have called anyway.