Is this really a bad fold? I'd like to hear from some others because, frankly, I am ok with this fold. As it turns out SB ridiculously overplayed his hand, but it looks for all the world like an acceptable way to play a set (nice medium bet to see if you get customers, you get raised, so credit raiser with a big hand and put him to a decision for his stack--no problem playing a set this way, IMO). I think most of the time this is a set, and, therefore, I do not disagree with this fold.

What if OP had called, villain had a set, and then OP posted this under the subject line: Got Stacked with 99--Overplayed my hand? Who would tell him NH here?

On the other hand, how does this hand play if OP just calls on the flop bet? I have been in similar situations before, and would like to know what others think is the best way to play this hand. I have both raised and called in similar situations, but have yet to figure out which seems optimal.