Check possessing the Nuts

Good evening, what did you think of the Brazilian player's Atiall by just checking out the nuts on the river?

I'm really sorry the question was meaningless.
The player in question was Yuri Martins.
The following hand: The opponent opens in MP and Yuri no Big just pays.
Flop K 8 T without flush, Yuri check and the opponent bet, Yuri pays.
Turn A, both DAO check.
River Q. No flush possibility
Yuri bets pot and the opponent triple the bet.
Then Yuri so pays by holding J for a sequel T to A. And the opponent was only 8 and 6, having only a pair of 8.
So my question about it and if it was just this call from Yuri being that he was nuts? Being that the opponent was not all in and possessed many tokens still.
Or if it gets featured collusion

Looks like they did miss value. Interesting to hear if he commented on that hand. I wouldn't be to quick call collusion though.

That is odd. He has the winning hand. He has nothing to lose by raising. Yuri either made a mistake or there was something going on between him and the villain.