[jaym96822]

While AA and KK are possible, I do not think they are likely. A good player who 3 bets pre-flop OOP is highly unlikely to check a dangerous flop into two players. With the pot that size and given the chip stacks behind, the AA or KK would be more concerned with winning the pot immediately rather than allowing someone with 7, 8, or 9 outs a free card. It's much worse than adanthar's situation because the AA or KK doesn't know which outs will hurt. Spade flush? A, K, Q, J, T, or 9 for a straight, two pair, or trips? It could even be the 7 of clubs that kills your hand when the guy turns a set and proceeds to stack you.

JJ is a possibility, but not for this particular player. For this guy or any good player, it is a VERY weak move to check that flop first to act after being the pre-flop 3 bettor. Playing that way will not get you deep in 1000+ player fields during large events.