KK - Boat on the river - Correct fold?

[mickeynygaard]

So, my friend just played this hand, and i argued that it was a bad fold, he on the other hand was 100% sure about the fold. He argued that people on this particular site, only bet very strong with a monster, in this case he's sure he has the jack.

Comments on all streets also appreciated.

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Hand #95412845 at table: Table TH 507
Started: Sun Sep 04 22:24:45 2005

Gremlin is at seat 1 with 36.65
<font color="red"> Hero is at seat 2 with 65.85 </font>
wenwen82 is at seat 3 with 6.35
KCcardplay is at seat 4 with 18.25
Llanddyfna is at seat 5 with 70.30
Timmay is at seat 6 with 57.25
<font color="orange"> Villain is at seat 7 with 88.84 </font>
kudlaty is at seat 8 with 33.05
Jose Pedro is at seat 9 with 51.72
NikkyS is at seat 10 with 19.25

Llanddyfna posts the large blind 0.50
KCcardplay posts the small blind 0.25

KCcardplay: --, --
Llanddyfna: --, --
Timmay: --, --
<font color="orange"> Villain: --, -- </font>
kudlaty: --, --
Jose Pedro: --, --
NikkyS: --, --
Gremlin: --, --
<font color="red"> Hero: K [img]/images/graemlins/diamond.gif[/img], K [img]/images/graemlins/heart.gif[/img] </font>
wenwen82: --, --

Pre-flop:

Timmay: Fold
<font color="orange"> Villain: Raise 2.50 </font>
kudlaty: Fold
Jose Pedro: Fold
NikkyS: Fold
Gremlin: Fold
<font color="red"> Hero: Raise 5.00 </font>
wenwen82: Fold
KCcardplay: Fold
Llanddyfna: Fold
<font color="orange"> Villain: Call 5.00 </font>

Flop (Board: J [img]/images/graemlins/spade.gif[/img], 9 [img]/images/graemlins/diamond.gif[/img], J [img]/images/graemlins/club.gif[/img]):

<font color="orange"> Villain: Check </font>
<font color="red"> Hero: Check </font>

Turn (Board: J [img]/images/graemlins/spade.gif[/img], 9 [img]/images/graemlins/diamond.gif[/img], J [img]/images/graemlins/club.gif[/img], J [img]/images/graemlins/heart.gif[/img]):

<font color="orange"> Villain: Bet 4.50 </font>
<font color="red"> Hero: Call 4.50 </font>

River (Board: J [img]/images/graemlins/spade.gif[/img], 9 [img]/images/graemlins/diamond.gif[/img], J [img]/images/graemlins/club.gif[/img], J [img]/images/graemlins/heart.gif[/img], Q [img]/images/graemlins/club.gif[/img]):

<font color="orange"> Villain: Bet 15.00 </font>
<font color="red"> Hero: Fold </font>