[elindauer]

Good bet. When he checks the second time, he's passing on a golden opportunity to bluff. He probably then has a made hand. He's also passing on an opportunity to value bet, so it's unlikely he has an overpair. What hands don't bluff and aren't overpairs and 3-bet preflop? AQ, maybe AJ.

Further, he will call with these hands, hoping to snap off a bluff from a missed flush draw. It's rarely right to value bet AK unimproved on the river closing the action, but I like it here.

-Eric