[Fantam]

I would have bet the flop.

There were no flush or straight draws available on this flop. So you are behind to anyone with an unlikely 5 or someone with Kx. I doubt that anyone has a higher pair, as no one raised preflop.

I like betting the flop, because by checking you risked the flop being checked through and allowing anyone with an overcard to your 99 to outdraw you.

I agree with your turn bet for the same reason of not allowing a free card to one of your opponents to outdraw you, if you have the best hand.

I would probably have check/called the river. Thats because there were not many worse hands (perhaps a smaller pocket pair) that were likely to call your bet.