Game just started. Stacks are 800.

Hero is dealt 9c-6c.

Hero makes it 12 to go. Villain calls.

Flop:

T-9-6 rainbow.

Villain checks. Hero bets 20. Villain makes it 60. Hero makes it 120. Villain makes it 300. Hero...?

Fold is standard without a read. He reraises overpairs preflop, and he can't put in the $300 with just a 10. I suppose he could have QJ and be going crazy, or trying an elaborate bluff, but I think you usually see T9 or 78.

ZOMG YOU HAVE TWO PAIR ALLLLLLIN!!!!!

nah fold.

All in.

It's heads up you got bottom two on a drawish board, this is pair + gutty a lot IMO.

if you're deep, call or fold - i wouldn't sweat either

if you're shortstacked, it's really easy to all in

i agree with 8ball... i would be thinking 9-10, QJ, JJ, 1010, or 78. because you have 6-9 66 and 99 are less likely but still possible. against that range i think you have to let it go early in a HU match. it's unfortunate villain got some momentum going with this hand, but live to see another flop and use his flop aggression against him later in the match