Not noting past behavior, I would suspect trip 7's or 9's, hoping to scare off the heart flush draw.....or even A 10 if he's been in a lot of pots...

With that one note on what he has done...eh, I guess the smart thing would to still give him credit for something and be happy you only lose the 150.

I would raise to something like 1800 and call any shove here, especially against a LAG player, though you do have the cutoff to consider. Hopefully the raise will get you a free river card if you happen to brick the turn and then you can control the size of the pot. Against a lag opponent I think you have to assume you have at least 12 outs here, which gives you pretty good equity in the hand.

Text results appended to pokerstove.txt

345,510 games 0.031 secs 11,145,483 games/sec

Board: 9h 7d Th
Dead:

equity win tie pots won pots tied
Hand 0: 61.923% 60.45% 01.48% 208848 5103.50 { AhQh }
Hand 1: 38.077% 36.60% 01.48% 126455 5103.50 { 22+, A2s+, K7s+, Q7s+, J7s+, T7s+, 97s+, 87s, 76s, 65s, A2o+, K9o+, Q9o+, J9o+, T9o }

This is a pretty wide range IMO, but from what you said earlier he seemed to be pretty aggressive and showing down some trash, so hypothetically he could be playing ATC. Raising the flop allows you to take control of the hand and you have position on the SB, so I raise here, maybe even shove the turn if you brick but hopefully your opponent just folds on the flop and you take it down there.

doubtfull he has a set here. I think any raise you make commits you if he shoves, if you made it 1800-2200 and he shoved you half like half your stack in. I would just move in and make him fold aj-ak and be fine with a call with 10s-qs with the money in there already. You only have 9x his bet so I think I would move in. Thats me though

sit out. drink. reevaluate life.