100NL - Not so nice a river

[XTR1000]

No reads other than a HUD showing 13/7/4 over 130

$0.5/$1 No Limit Holdem
8 players
Converted at weaktight.com

Stacks:
UTG ($144.55)
UTG+1 ($94.50)
MP1 ($108.50)
MP2 ($108.00)
CO ($18.00)
BTN ($16.50)
SB ($110.25)
Hero ($141.35)

Pre-flop: ($1.5, 8 players) Hero is BB
UTG calls $1, 2 folds, MP2 calls $1, 1 fold, BTN calls $1, 1 fold, Hero checks

Flop: ($4.5, 4 players)
Hero bets $3, 1 fold, MP2 calls $3, 1 fold

Turn: ($10.5, 2 players)
Hero bets $7.5, MP2 calls $7.5

River: ($25.5, 2 players)
Hero b/f, c/f, c/c ??? [color=#cc0000]

[AHiltz]

Bets since opp has a set here most of the time and was trying to fill up. If you check he may very well fire a bluff, but is likely not to raise anything but As or Ks on that river.

[nutsinho]

b/f 9 cheeseburgers. c/c is the worst option because he's nearly always going to have showdown value and people at this level arent good enough to turn weak made hands into bluffs.

[jimmy44]

A 13/7/4 doesn't have most of the time a set here. He would have raised on flop or turn.
I think the most likely holdings are 88-JJ with one spade, or a A with a spade. A set would be possible but I don't think it's very likely here.
I prefer a check/call a bet up to $8-9 and fold higher. If villain bets 1/2 or 2/3 we are most likely beat.