Opp CST 51, 3b22, af 3,0, wtsd 29. Call or not river? argument your opinions? Maybe my river bet is too small?

Fold, if you're calling this you're probably not folding any of your value betting range which obviously isn't good.
Now whether or not it's a value bet is also up for debate. (it probably is tbf)

Its a weird hand to be honest. You aren't beating any value hand obviously but I can't see a single hand which should be playing this way for value. I'd expect 89 or 54 to cbet flop. JJ, 77 and 66 should be raising flop or turn and TT should raise turn.

Its just such a strange line to take with any hand. If you called in game and saw his hand you should definitely take a note on his play.

I don't like your sizing here by the way. Your hand looks sooo much like a weak value hand. I bet like 5.50 on flop, enough on the turn to have a PSB left going to river and I check the river. With that sizing, I am happy to fold to a turn check raise and I can't face one on the river.

River is not a value bet. Villains range is so narrow that the 6 combos of QJ that he could have raised pre and might be playing this way some of the time has an appreciable effect on betting vs checking. If he can show up with basically any AA, KK, QQ, AJ, or KJ, which he can and will, it isn't going to be a vbet.

As played I would fold without some kind of dynamic that suggests a call. 50Villain can show up with enough slowplays and stupid thin value that it just becomes a high variance coin flip at best.

OP think about your river betting range and where this hand falls. Should make things easier.

I think this is debatable as a value bet or a check back but, kind of oddly, once we do bet and get raised I sorta feel like villain is going to have a super polarized and likely bluff weighted range. That coupled with the pot odds makes me want to hero call.

I think check back is best
I am sure that the GTO play is to let this go (IF you bet for value and are raised) you are at the DEAD bottom of your range that may be able to bet for value against the right player and so you need to fold or you are just never bet folding the river for value.

All that said, I'm awful suspicious of this line from villain and I want to look him up here.
I think we are prob beat an awful lot when called (so much so that "value" bet is a bit of a stretch) but what hands can he do this with against us? Could he be reading the small sizing for what it is, a THIN vbet and decide to pound us for it?

Do the pot odds, our small bet sizing, and villain's strange line make anyone else wanna say "meh, i gotta see this?"

doesn't make sense = snap call