A5: flopping the straight, flush hits on turn

[Adelson]

PokerStars No-Limit Hold'em, $1.00 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($83.50)
MP ($14.50)
Button ($234.70)
SB ($57)
Hero ($101)

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, MP calls $1, Button calls $1, SB completes, Hero checks.

Flop: ($4) 3[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets $3</font>, MP folds, Button folds, SB calls $3.

Turn: ($10) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $7</font>, <font color="#CC3333">SB raises to $14</font>, Hero calls $7.

River: ($38) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $16</font>, Hero folds.

SB is pretty much unknown. Thoughts?