[kiddo]

If he got the Ace but not a great kicker Im not sure he is checkraising here, cause then he is spending a lot of big bets out of position against a good aggressive 3bettor with toppair, which normally isnt that great.

But the Ace of course is scary for him 2, since u got an Ace in a big part of ur handrange. Bet and hope he folds a not so good flushdraw. Call down if he raises. If he checkcalls turn, I would often check river behind, thinking he got an Ace or a strangely played monster more often then he is calling with a worse hand.