Fire another barrel on river?

[gol4pro]

I have a fairly TAG image through 10 hands at this table-- bought in for 30 and doubled up 3rd hand with overpair vs TPTK.

50$NL, 60$ stacks

I have 9 [img]/images/graemlins/spade.gif[/img]T [img]/images/graemlins/diamond.gif[/img] on button. UTG calls, I limp, blinds check

Flop A [img]/images/graemlins/heart.gif[/img]8 [img]/images/graemlins/heart.gif[/img]7 [img]/images/graemlins/diamond.gif[/img]
-- pot 2$
-- UTG bets 1$, I call

Pot 4$
Turn 4 [img]/images/graemlins/club.gif[/img]
-- UTG bets 2$, I raise to 9$, UTG calls

After his weak flop and turn bets-- I didn't give him credit for much of a hand, and thought the turn was a good spot to represent A4/56 or some slowplayed trash I might make him believe I had.

He thinks.... and calls.

River K [img]/images/graemlins/diamond.gif[/img]
-- He checks, pot 22$
-- Worth another barrel?