Overpair on level 1, leading the action OOP

[Phoenix1010]

How do play this preflop, on the flop, and on turn? What is your move on the river? Why?

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

SB (t985)
BB (t800)
UTG (t1020)
UTG+1 (t800)
UTG+2 (t785)
MP1 (t630)
MP2 (t555)
Hero (t770)
CO (t1070)
Button (t585)

Preflop: Hero is MP3 with T/images/graemlins/spade.gif, T/images/graemlins/club.gif.
UTG calls t15, <font color="#666666">4 folds</font>, Hero calls t15, <font color="#666666">1 fold</font>, Button calls t15, SB completes, BB checks.

Flop: (t72.50) 7/images/graemlins/spade.gif, 5/images/graemlins/heart.gif, 9/images/graemlins/diamond.gif <font color="#0000FF">(5 players)</font>
SB checks, BB checks, UTG checks, <font color="#CC3333">Hero bets t75</font>, Button calls t75, SB folds, BB folds, UTG folds.

Turn: (t222.50) 7/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t125</font>, Button calls t125.

River: (t472.50) A/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
Hero?

[JP Rocks]

I would put him on either non-ace overcards, or broadway/9.

If he had A9, he should be protecting it. I doubt he has A10 (because of your two tens), I dont see him having AJ, AQ or AK, because these usually get raised in his position (assuming this is a 10+1). I think you are ahead here, but the best play might be to try and induce a bluff. Take a few moments, and then check. If he bets, push.

[Phoenix1010]

Bump.

[Newt_Buggs]

if you check he's probably only going to bet if you're beat. Almost every player is going to (correctly) check behind with a 9.

bet around t200, fold to a raise. IMO its highly unlikely that he will raise you here on the river without you beat. Theres also a good chance that you still have the best hand (since he probably has a 9)