In this hand, Joe Hachem tries to bluff an amateur off of quads on the river. While there are some legitimate reasons Hachem played this hand the way he did, all-in-all I think it was way too likely that the amateur had a huge hand. One of the factors in this hand was the amateur’s willingness to talk about the hand and express concern about Joe’s hand, which are pretty reliable indicators that a player is comfortable and has a strong hand.
The Big Game amateur, Hrankowski, who’s a recreational player, gets pocket Jacks and raises it up. It gets four-way, and the amateur flops quads. Hachem has 77, and the board comes JJ3, which is a pretty good flop for Hachem, all things considered. It gets checked around on the flop, and a 4 comes on the turn. Hachem understandably bets out, and the amateur calls.
The amateur’s call, after a check on the flop, should set off alarm bells in Hachem’s mind. The amateur has played very timidly up until this point, and has avoided being involved in any pots.
As if the call wasn’t enough information, the amateur starts to give a little speech, which is another valuable piece of information, because the more a usually reticent player seems relaxed and talkative, the more likely big hands have gotten. The amateur says something like, “That’s what you did before”, referencing a hand where Hachem bet the same amount in a previous pot and beat him. It seems to be an attempt at trying to make Hachem think that the amateur is reading Hachem for high hand strength and is therefore weak. Combined with the call of Hachem’s bet, this should be a clue that Hachem needs to give up on the river. (And it seems from Negreanu’s expression that he has this figured out when Hrankowski calls the turn bet.)
The river comes a deuce, and Hachem moves all-in for what is actually a large overbet of the pot. The amateur obviously immediately calls, and Hachem gets the bad news.
When someone makes an excuse for their bet, or expresses worry about calling a bet and then continues in the hand, you should be very wary. If the amateur actually had a hand he was worried about, like AA or KK or QQ, why would he go out of his way to express concern about the situation?