1/2 A2s value raise this river?

[spector]

Turn villian is a little loose PF but otherwise hasnt really got out of line, has only been at the table a few orbits
Party Poker 1/2 Hold'em (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is CO with A[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">1 fold</font>, MP1 calls, <font color="#666666">2 folds</font>, Hero calls, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (5 SB) 7[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, UTG+1 folds, MP1 folds, Hero calls, SB calls.

Turn: (4 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">SB 3-bets</font>, BB folds, Hero calls.

River: (11 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

Final Pot: 13 BB