PokerStars - $0.05 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

BTN: 154.2 BB (VPIP: 31.37, PFR: 29.41, 3Bet Preflop: 10.53, Hands: 53)
Hero (SB): 293.4 BB
BB: 100 BB (VPIP: 23.08, PFR: 20.51, 3Bet Preflop: 18.18, Hands: 42)
UTG: 119.2 BB (VPIP: 40.00, PFR: 20.00, 3Bet Preflop: 0.00, Hands: 15)
MP: 103.8 BB (VPIP: 14.29, PFR: 14.29, 3Bet Preflop: 0.00, Hands: 7)
CO: 64.2 BB (VPIP: 19.23, PFR: 7.69, 3Bet Preflop: 0.00, Hands: 52)

Hero posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has A J

fold, fold, fold, fold, Hero raises to 3 BB, BB raises to 9 BB, Hero calls 6 BB

Flop: (18 BB, 2 players) J 7 3
Hero checks, BB bets 5.4 BB, Hero calls 5.4 BB

Turn: (28.8 BB, 2 players) 8
Hero checks, BB bets 20 BB, Hero calls 20 BB

River: (68.8 BB, 2 players) 5
Hero checks, BB bets 65.6 BB and is all-in

4bet preflop. This hand doesn't really flop well and you are OOP.

AP XR flop - our XR frequency goes up vs small sizing. And we block AA!

AP call.

4 bet pre.

His sizing is pretty nutted from what I am seeing in the pool. Population is not following through with triple barrels with AK on rivers so it's a bit worrying on the river. Blind v Blind 3bet ranges are a lot wider which makes it okay to call I guess but not expecting to be good an awful lot. I am seeing BB 3bets with 77/88 v SB so he could have more value than you might expect.

Not having a diamond is pretty good as his flop/turn bluff barreling range will consist of backdoor flushdraws but this isn't too big of a factor I think. One problem is that you have a pretty capped range and villain might just be super aggro with a range advantage. I think calling here is fine but population tendencies are that this spot is heavily underbluffed and I would expect his range to consist primarily of overpairs and be heavily weighted towards value. If you have any reads that villain can 3bet light you should deffo lean towards calling though.

yeah pre and flop can mix raises
ap calling

With AJo, I would also 4bet to 2.4-2.7x. This bluff doesnt need to work too often and it blocks JJ, AK, AQ, AA. Calling out of position is not really a good idea especially since we usually miss the flop and have to call off with ace high.
He also seems to have a high 3 bet percentage so his Resteal may also be high as well.

4 bet it and punish the villian for 3 betting too light.

Unfortunately it must be done, otherwise you're either folding too frequently or 4betting too light