Seems kind of standard but this guy was quite nitty. I think he is capable of flatting JJ+ here. Not sure if we can expect him to overplay AJ as well?
I had a sick feeling when he 4b so small on the flop. My brother was watching at the time and I even tanked and said he had 99 but couldn't fold.
I'm not into making hero folds with sets though 
888 Poker - $0.04 NL (6 max) - Holdem - 4 players
Hand converted by PokerTracker 4
UTG: $5.21
BTN: $4.00
Hero (SB): $4.22
BB: $4.52 19/14/1/2(1/58)/56/213 - NIT
Hero posts SB $0.02, BB posts BB $0.04
Pre Flop: (pot: $0.06) Hero has 2♣ 2♥
fold, fold, Hero raises to $0.18, BB calls $0.14
Flop: ($0.36, 2 players) 9♣ J♦ 2♠
Hero bets $0.18, BB raises to $0.36, Hero raises to $1.08, BB raises to $1.80, Hero calls $0.72
Turn: ($3.96, 2 players) A♣
Hero checks, BB bets $1.90, Hero raises to $2.24, BB calls $0.34
River: ($8.44, 2 players) 6♥
Hero shows 2♣ 2♥ (Three of a Kind, Twos) (Pre 18%, Flop 4%, Turn 2%)
BB shows 9♥ 9♠ (Three of a Kind, Nines) (Pre 82%, Flop 96%, Turn 98%)
BB wins $8.02
