Thanks everyone for the comments so far. Seems there is a strong argument for betting, which is what I did. But I didn't really have a plan for folding or for calling. Here's what happened:

Hero bets, MP1 raises, BTN calls, Hero ...

Comments?

i dont think were ahead often enough here,

Crying call.

Since MP1 is the one raising the river after calling 2 cold on flop, the 9 makes him a big hand. You are getting 17:1 so cry calling isn't a big mistake.

With that said, unless MP1 has shown before that he doesn't understand the basics of the game or it's his first time playing, or drunk or hallucinating, you may not be good more than 1 in 17 times. Other than straight or flush, what else can he be raising with?, a bluff?. They can't both have K9.

But then again, shrimp cocktails are overrated, and fur coats are hot so decide at your own risk

how often do u play in brantford?

at 27:1 b/c with top set always has merit.

grunch: b/f river unless it goes bet, fold, then you get c/raised heads up by MP1.

every draw came in for the BTN, and he should have no worse value hands that raise this river.

17:1

At my cardroom, once MP folds, he can't get his cards out of the muck to raise, so if he still insists on raising, his money probably stays in the pot even though he can't win it without cards. Oh, and the button wasn't the one that seemed to be drawing.

In your defense, you did get the number of players right so that part was helpful.

My post was 10x as useful as yours. Ok rereading the action just b/f against any action.

Seriously, guys?

Crying-call the raise. Once in while your hand will be good.

Good lord bet this one.

I mean, you are for sure getting called by AK (ok, not too many combos), 2 pairs, etc.

Villains' raising range probably includes 2 pairs that got there on the river (and can't read hands, but whatever), and that along probably gives us odds to call in this big pot if we get raised (and even if not, the "tilt equity" of not folding sets in giant pots also has non-zero value).

So a betting is just so obvious it hurts me, and b/c is my "plan"

I get the arguments for b/f, and obv if action goes call then raise or raise then call from villains, I fold.

I also think its fine to fold to a raise if it ends up HU, 'cuz I suspect it's close, and saving bets is important... This is doubly true if the "tilt equity" has no value to you (ie: you don't tilt as hard and as often as I do).

Tl;DR BET YOUR HAND