Quote Originally Posted by lean86
I think he misplayed the hand (the first one you posted), way too passive. The only scare card for him was the Ace, considering the probability of you have ace-trey for a straight on the flop is pretty small.

As for the second one, i like your line of thinking but i would've tried a raise there aswell.
What should he do? over-bet the pot?
The Ace is pretty scary. All kinds of Ax combinations get a piece of that flop, and a lot of players at these stakes will call you down with these hands. There aren't too many other possible hands considering the pre-flop raise.
99 made a set - QQ, KK had you in the first place... leaves the opponent with possibly crap or 77, 88. Not too much there a pair of jacks would beat that would call bigger bets here.