Question about Playing over pairs with a pair on board

[carmine782]

Ok i was playing 3-5 no limit hold em. I was on the big blind with QQ. Guy under the gun raises to $25 pre flop, there are 2 callers including me. (3 players in the game). Flop comes 9 7 4 rainbow. I bet $80. everyone folds except original raiser who calls my $80 bet. At this point i am slightly worried that he might have K or A's. Turn comes "9". We both check. River card is a 2. I check, Guy bets $150. I call. He had 9 J off suit. I lost. did i play this wrong? I assumed he was not on top pair because he called my $80 bet on the flop. Also, since he raised under the gun, i had him on a pair, and I had QQ's so the odds are that my pair was better. Did i think through this wrong? did i play this wrong?

[HalfSugar]

Why are you just calling pre-flop there?

[carmine782]

I know, i should have raised, i wasn't thinking, but what about the rest of the hand?

[HalfSugar]

Flop and turn are fine, river is dependent on your oppo and would be a fold in some cases. In a vacuum with no reads, post flop was fine.

Re-raise pre-flop in this spot 100% of the time in future.

[carmine782]

I just never thought he would have a 9 in his hand raising under the gun. A hand of 10 9 or A 9 crossed my mind, but i had him on a pair, and i felt that i would take a chance that he didnt have KK or AA. I have seen very few people raise under the gun with J 9 off suit. I would usually throw that hand away in that spot.

[HalfSugar]

Again it depends on the oppo but 99 and 77 (and even 44 in most low stakes NL games) are good enough in most players' heads for a raise UTG. As played you can't really discount a flopped set (although 9s are pretty unlikely on the turn!).