Facing a river push

[sweetjazz]

Villain is 21/5 preflop with an aggression factor of 0.6. Is this an easy muck? The only thing I can see villain pushing here that I beat is two pair or a complete bluff (missed spades?) but the latter seems very unlikely. It's hard for me to put villain on a hand here, however. Also, how much more aggressive would an opponent have to be before this turns to a call?

Party Poker No-Limit Hold'em, $ BB (10 handed) FTR converter on zerodivide.cx

MP1 ($27.25)
MP2 ($46.30)
MP3 ($16)
CO ($42.65)
Hero ($21.40)
SB ($35.80)
BB ($41.65)
UTG ($25.15)
UTG+1 ($25)
UTG+2 ($41.03)

Preflop: Hero is Button with Q[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.10.
<font color="#666666">1 fold</font>, UTG+2 calls $0.25, <font color="#666666">4 folds</font>, Hero calls $0.25, <font color="#666666">1 fold</font>, BB checks.

Flop: ($0.85) J[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">BB bets $1</font>, UTG+2 calls $1, <font color="#CC3333">Hero raises to $3</font>, BB folds, UTG+2 calls $2.

Turn: ($7.85) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+2 checks, <font color="#CC3333">Hero bets $6</font>, UTG+2 calls $6.

River: ($19.85) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG+2 bets $15</font>...

[DJ Sensei]

Raise the flop to $5, bet full pot on the turn.

As it stands, this is a tougher decision than it should have been... fold to his K[img]/images/graemlins/club.gif[/img]T[img]/images/graemlins/club.gif[/img]?

eh yeah, i would probably just fold this against a 21/5 with a small aggression factor, but for some reason, i sometimes call (cough-leak-cough). raise or fold preflop, depending on reads and table image. it helps define your opponents hand and makes these river decisions easier.

--solids

[sweetjazz]

NH sir to DJ Sensai. Villain indeed had K [img]/images/graemlins/club.gif[/img] T [img]/images/graemlins/club.gif[/img]. There are only two ways for me to know that, and unfortunately I didn't learn this information because villain clicked "Show Cards" at the end of the hand.

Thought it best to post this hand, because I immediately regretted hitting the call button and realized it was a donktastic "I'm not smart enough to figure out what you have so I'm gonna call even though I should know better" move.

DJ, what's the reasoning to bump it to $5 instead of 3?