PokerStars No-Limit Hold'em, $1.00 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP2 ($77.50)
CO ($198.85)
Hero ($105.40)
SB ($99.70)
BB ($80)
UTG ($93.25)
UTG+1 ($64.65)
MP1 ($5.55)

Preflop: Hero is Button with J, J.
3 folds, MP2 calls $1, 1 fold, Hero raises to $4.5, SB calls $4, BB calls $3.50, MP2 calls $3.50.

Flop: ($18) 9, T, 2 (4 players)
SB bets $9, BB calls $9, MP2 folds, Hero ???

---

SB is a 20/9/5 over only about 20 hands, and BB is a 58/0/1.9 over about 30 hands.

What's your move here?