Check/fold river?

[Lmn55d]

Villain is 48/18 with WTSD of 35

Party Poker 10/20 Hold'em (6 max, 5 handed) converter

Preflop: Hero is BB with 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises</font>, Button calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, MP calls, Button calls.

Flop: (9.50 SB) A[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, MP calls, Button folds.

Turn: (5.75 BB) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, MP calls.

River: (7.75 BB) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP bets</font>
Final Pot: 9.75 BB

[Roy6]

Definetely check/fold. Looks like kings for me.

[tighterr]

Checking the turn and folding to a sneeze.

[Roy6]

Opponents WSD is too high for his VPIP.
He's calling the flop with a worse PP.
Checking the turn is a great way to induce a bluff.