99 call 3B

He raises preflop so the king is very much in his range. Hands like KQ, AK, AA and even KJ are in his range. The checkbehind on turn is not abnormal with those combos cause some players dont necessarily want to barrel on all 3 streets with “only“ toppair or overpair. So they do it on flop/river to have the possibility to induce a bluff (or at least let your own hand look weaker to get more often money with your second barrel on the river).

I dont know how many hands you from him (or other words how accurate his 10%-3-bet-number is), but against his whole prefloprange you got only 50% equity on the river. I dont think that he will call you with any weaker hands so you are turning your middlepair into bluff and after his raise its time to fold.

Well that's pretty strange. I agree, there are many Kings in his range, like AK, and KQs, and I think it is more likely than A4s.

His turn check looks maybe a bit weird and I would say his range is capped, he probably doesn't have TPTK or better. But I'm still not sure if you should bet the river, that is kinda turning our hand into a bluff. I think a good alternative line would be to check and then use our hand as a bluff catcher. He might bet his missed flush draws.

Thanks guys, yeah, no point in betting otR.

Could also learn a lot from this hand. Checking OTR seems pretty good here. I mean vs a push I’d still fold but we could call some half or 2/3rd pot size bet still