1) Its always easy to say what you should have done after the event.....
2) I rarely understand them.....lol
Your play post flop was good sounding your opponent out to see if he is holding any 9's and his response would lead you to believe that he isn't (correctly) perhaps put him on a couple of overs.......
You improved your bet 3 fold on the turn when you hit your 5 and he flat calls, this is where I would start to think about the "big blind special" coming up and I would have to start considering a higher over pair (your still miles in front) or and more likely 9 7 o or s and his slow playing me.....Pockets 7s would still be a shocker but at this point well worth considering.....
You bet a fair amount on the river, now knowing he hasn't hit the ace with his A9....is a possibility.........and then here it comes....
He backed raised you for the 1st time during the play.......Hmmmmm....what could he have.....he could be bluffing trying to make his chase pay....he knows that you know he hasn't raised the whole hand, maybe wanted to scare you........Or.....
Has he hit one of the previous mentioned hands or already had it and was just playing for maximum payout....hence just doubling your raise on the last although he had the near nuts......
I feel you could only call his raise of course you couldn't lay your hand down you have a fullhouse that you made on the 4th.....but yet still there are better possibility’s out there than the hand you had, all be there only a few...
Hein sight is a great thing but that re-raise would have rocked me a bit but I would have paid what I've just bet to see his cards however.....just not of re-raised him.
Another Day Another Dollar......!!!!!
Bleh, what to do here except lose money? 
I dont usualy replay to these 
Have to disagree....!!!! 
