Check Raise or Played Properly?

[tor]

I had very little read here on the CO here. Had sat down and watched about 12 hands, and he seemed to fold a decent amount PF, didn't see any significant flop play beyond a call to see the flop and a fold. PT only had about 20 hands beyond that and he *might* be a TAG, maybe tight passive.

Ultimate Bet 0.25/0.50 Hold'em (9 handed) converter

Preflop: Hero is MP2 with A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, CO calls, <font color="#666666">3 folds</font>.

Flop: (5.40 SB) 9[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, CO calls.

Turn: (3.70 BB) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, CO calls.

River: (5.70 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, CO calls.

Final Pot: 7.70 BB