PokerStars - $6.51+$0.49|15/30 NL (3 max) - Holdem - 3 players
Hand converted by PokerTracker 4

BTN: 24.33 BB (VPIP: 55.56, PFR: 11.11, 3Bet Preflop: 0.00, Hands: 9)
Hero (SB): 17.17 BB
BB: 8.5 BB (VPIP: 88.89, PFR: 44.44, 3Bet Preflop: 0.00, Hands: 9)

Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has A 5

BTN raises to 3 BB, fold, fold

BTN wins 2.5 BB

Was he raising x3 regularly? Do you have a read on his sizing?
Readless, I'd think this is an easy shove as BU should be rising a big % of hands.
If it's the first raise x3 that he does, id min 3bet/fold

I fold here mostly with lower Axs until i get to 13-14bb, unless he is doing it often and then i might jam over. If it was fist time he 3x'd, and it gave me a funny vibe, i would maybe fold and see if i can get a gauge on what he does that with.

Villains button open range should have tightened a bit as we get towards 16-17bb, and a lot his hands can call a shove.

A9s + i'm jamming over, but i'm never ever min 3bet folding.

that's almost 1/3 of stack to either have to fold, or play OOP with slightly more than a PSB left and a hand that doesn't flop well unless you see lots of diamonds or maybe hit your Ace.

would like to hear your thought on it LSheldor as i might be thinking about it all wrong.