AA on monotone flop

Having odds of 5.4:1 + him having the chance for a weird hand on the river, I could not fold here.
I agree, that a raise on the river looks very strong, but I think the only hands that would call,call,raise here are some A♠:+low:spade:. Strong AsXs would 3bet preflop. Weaker flushs would prob. raise to protect against your A♠: and K♠: + they want to get value in case you don't have a before the fourth hits and you shut down.
2-pair or sets prob. just call the river.
Believing all that + the odds I get, I would call the river.

Pre-Flop: Once he had position over you, the pre-flop call is perfectly reasonable and allows us to exclude hands as JJ++, AK, AQ's from his range.

Flop: Your bet on the flop is a good size bet. You could've chosen to bet the pot on such a monotone and coordinated flop, but it's not a disaster bet. The real draw that could harm you there is the flushdraw.
From his call we can assume he had a spade card on his holding, most likely an A, K, Q, J.

Turn: The Qd here is a card that favors you. As you said, is a card that fits his range and your attempt to extract value here is the best option. Once he called, it's reasonable to assume that either he's got a Q or he has some sort of hand like a set and he's trying to trick you with a double float.

River: The Kc is again a card that helps you to extract some value. The 4th spade didn't come, so at this point the flushdraw is the least of your concerns. You should feel pretty confident betting this river.

About the his river raise:
This king completes a hand that beats you: KQ. This is a holding that's consistent with the way he played the entire hand: he had two overcards on the flop and possibly a flushdraw and the turn helped him, as well as the river.
If he had KQ's /AsXs you were beaten a long time ago, but I believe he would have raised you on the flop/turn (mostly on the turn) with this type of holding, since you were the agressor pre-flop.
A set also beats you from the beginning, but I think is very unlikely for the same reason I mentioned for KQ's.
In short, I believe his river raise is sustained by a hand made on the turn/ river with the K, Q and you should not be afraid to call here.

By the way, if you could post the hand he showed would be nice.

Dont post the results or post it after few more opinions.

I would bet smaller on the flop and turn and fold to the river raise. Spare yourself whats left. You are never good here.

I think as well a fold OTR is best option. You were betting 2x very large on a monotone board with strong range and he did not fold. I think blockbet-fold would be the way to go, because this line Villain takes is rarely for a bluff. Usually recreational Villains are quite passive so when he raises, he probably has your single pair beat.

Agree with Sunrise. I might actually consider x/folding OTR. But I guess a small bet to block his possible bet can be fine, but definitely dont bet this big.

Originally posted by Sunrise1912
Dont post the results or post it after few more opinions.

I would bet smaller on the flop and turn and fold to the river raise. Spare yourself whats left. You are never good here.

Agree with this. On monotone flops people will fold way too much anyway. When you bet almost pot you don't get any light calls. Villain will continue with a stronger range. Same thing OTT, now I would expect him to be quite strong. And when he raises OTR, those are just almost never a bluff especially when you have shown that amount of strength.