Preflop is obvious. Raising >> folding >> limping, unless the blinds are crazy. A good case for folding only exists (imo) if CO is indeed very tight calling station (ie he's beating you now and goes to showdown very often), along with loose blinds.


Flop check-behind is standard, theres no way you're ahead of them and the odds of you forcing them both out are slim.

Turn is standard with the 4flush. I have trouble putting CO on a hand here. I guess JJ is possible, but it would seem really strange for CO to play it this way. I think he would've capped QQ-AA if it came back to him. Most likely here I would imagine is a relatively weak ace (A6-AJ) that he didn't bet on the flop. However, pocket pairs below T (55-99) are also very possible, which most have sets now unfortunately. You beat 88-99, random air bluff, missed spade draw (Ksx), other missed draw (straight?). I'm not sure how often he has these, or how often he bets with them on the river.

I think the river here is very close. I would call and expect to be good at least 1/8 times, but not much more than that. I don't think folding is bad either.