is this an obvious call?

you have J2 in the sb.

btn (loose passive) open-limps, hero completes, bb (unknown) checks.

flop (3sb) K38

checked around

turn (1.5bb) J

checked around

river (1.5bb) A

hero checks, bb checks, btn bets, hero...

I probably call, hoping it'll be an 8x or 3x or 66 hand that Villain has decided is probably good (or it'll be a river stab with air in an unwanted pot) often enough.

Ax is an obvious concern, though, and I do think you're a dog. But I'm thinking maybe you're not a full 2.5:1 dog.

Player dependent. Against anyone competent I turbomuck.

Given description of villain, I think pot is small enough to let it go. One thing worth nothing is the BTN had two good bluffing opportunities on the flop and turn and he passed both those up which leads me to conclude that his river bet means Ax more than usual, plus his river play is perfectly consistent with preflop IMO as many LPs love to open limp with Ax on the BTN. I would also like to add that I think rzk played the turn well.

I think you probably need to define what you mean by competent cuz we already know BTN is not competent.

btw i folded the river in that hand and then started to feel kind of foolish. glad to know my play wasn't totally idiotic.

Folding the river is fine, but why didn't you bet the turn?

I'd bet this flop. Dry flop good chance they both fold.

Turn is hard without reads. I'd bet as default because it's straight forward/easy. Random donks will often check low pairs on the flop.

I wouldn't fold the river but who knows at this point.

I get myself into these spots all the time. I checked flop hoping to call a river bet when the under came off. I didn't get it. And I think like other guy: why is he bluffing *now*? I'd check the river just the same if I had an ace rather than a jack.

leader it seems you bluff at many ragged boards. are you betting made hands like Kx there too?

posts in the huhu forum come to mind too where you recommend leading out on ragged boards after the button open limps. I will always check vs all but the most passive opponents to induce bluffs, so I feel like only betting out when I am bluffing will be transparent vs all but the dumbest players

I am against a passive player OTB. In this spot, the only hand I'd consider checking (and actually have) would be 33. In general though with a more agro BT, I'd c/r a K or pair. If people were paying enough attention, this wouldn't work, but luckily they aren't.

If they adapt, mix it up. I wouldn't give up on it completely though. Like, for example, if you lead hu and he calls. Then, you just give up on the turn. Next time, you have middle pair or something on a dry board would likely be a good time to lead. This way, if he raises, you can just calldown and see his hand. You probably want to still c/r tp+ because, if you b/3b, he'll fold a variety of hands on the turn and you won't know what he's up to. Of course, if you figure out he's re-bluffing you, then you can lead whatever you want. After a few times showing down the nuts, you can start bluffing him again.

god bless you if you bet your whole range here and this is working 1/3 for you. i wish i had your image.

It's pretty hard to call here even if you're really loose. You're facing two very wide ranges that aren't hit hard by the board. Either you have a pair/a-high here or you have nothing. Many A/K raise so frequently no one has anything. In my experience, even LP guys don't call J6 or w/e.

I should say though. The higher you play the less this stuff works because people have seen it and have adapted. Similar to other plays like raising every time someone open completes. At like 5/10 though, this kind of thing is gold IMO.

What about the always popular open complete flop bet from the SB? O'rly you hit the A77 flop again - it's almost not believable!

It works well for me (I have a good image). We don't need 2 fold 33% of the time. With 2 card better than 8 we have 6 outs very often against 1 call. Here we have a J and a bfd.