How do we like this river checkraise?

[private joker]

CO is 24/17/2, but seems to be playing even LAGgier tonight. Sort of a loose cannon. MP2 is an unknown.

Party Poker 5/10 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with K[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">MP2 raises</font>, <font color="#666666">1 fold</font>, CO calls, <font color="#666666">1 fold</font>, Hero calls, <font color="#666666">1 fold</font>.

Flop: (7 SB) J[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP2 bets</font>, <font color="#CC3333">CO raises</font>, Hero calls, MP2 calls.

Turn: (6.50 BB) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP2 checks, <font color="#CC3333">CO bets</font>, Hero calls, MP2 calls.

River: (9.50 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP2 checks, <font color="#CC3333">CO bets</font>, <font color="#CC3333">Hero raises</font>