I think 99 is just strong enough to defend vs a 3bet/squeeze IP.
Against up to 1/2 PSB cbet OTF I think I could call but ~3/4 pot is too much, or do you call here once?
PokerStars - $0.02 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4
SB: 104 BB
BB: 184 BB
Hero (UTG): 143.5 BB
MP: 35.5 BB
CO: 104.5 BB
BTN: 102 BB
SB posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has 9♣ 9♥
Hero raises to 3 BB, MP calls 3 BB, fold, fold, SB raises to 12 BB, fold, Hero calls 9 BB, fold
Flop: (28 BB, 2 players) K♠ 6♥ 3♥
SB bets 20 BB, fold,