How Badly Did I Play This TT?

[Octopus]

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I think that calling down against this opponent is OK. You only need to be good 10% against a random bluffer here.

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If villain will always continue to bluff on the river, then he needs to be good 20% of the time, not 10%, since we will have to call two more bets. 20% is a lot, but given the read it is not impossible. If he will never continue to bluff on the river, then we can call profittably here and fold on the river. (That does not seem to apply.) If he will only sometimes continue a bluff, then we have to fold here. (This, too, likely does not apply.)

So is he bluffing 20% of the time? I have no idea, but calling down probably is not terribly costly given your read.