Set @ limped pot 100NL
 

Posting this for a friend.

Villain is 52/6, no further reads.

Party Poker No-Limit Hold'em, $ Hero (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($103.60)
UTG ($21.89)
MP ($90.45)
Button ($120.93)
SB ($41.50)

Preflop: Hero is BB with 6[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.50.
UTG calls $1, MP calls $1, Button calls $1, SB (poster) completes, Hero checks.

Flop: ($5) 7[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets $4</font>, UTG folds, MP calls $4, Button calls $4, SB folds.

Turn: ($17) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $13</font>, MP calls $13, <font color="#CC3333">Button raises to $30</font>, Hero calls $17, MP folds.

River: ($90) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero...? (70 left)

Re: Set @ limped pot 100NL
 

He might have 54 for the straight, but I think two pair is more likely given his stats. I'd check-raise the river all-in.