Is this call on the turn OK?

[whitelime]

SB is 50% to the flop. Button is bad but not that bad.
Neither player is overly aggressive postflop. What is my play from the turn onward? I really am not happy with my turn call as even when I hit my straight, it is often only good for a split. I think I should muck this on the turn. Other opinions?

Party Poker 10/20 Hold'em (6 max, 6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is BB with J/images/graemlins/diamond.gif, K/images/graemlins/spade.gif.
<font color="#666666">1 fold</font>, MP calls, CO calls, Button calls, SB completes, Hero checks.

Flop: (5 SB) K/images/graemlins/heart.gif, 2/images/graemlins/club.gif, 9/images/graemlins/heart.gif <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, MP folds, CO folds, Button calls, SB calls.

Turn: (4 BB) Q/images/graemlins/diamond.gif <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, Button calls, <font color="#CC3333">SB raises</font>, Hero calls, Button calls.

River: (10 BB) Q/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, Hero folds, <font color="#CC3333">Button raises</font>, SB calls.

Final Pot: 14 BB

[kiddo]

If u are sure SB got a better hand you should fold turn. If not, u have to call river. River is pretty ok card for you, K2 and K9 are now behind.

Unless SB is really passive I would normally call both. U got 5 outs for 2 pair or trips and 4 outs for straight and if he got lower 2pair there are 6 cards that will kill it. These outs aint clean but with the small chance that you are ahead or at least in a split situation I would guess its an ok call. But of course, it sure looks like u are behind and of course its playerdependent.