Villian is new to the table(1 orbit) and probably bad. I have no notes on him. What are others doing in this situation?

PokerStars No-Limit Hold'em, $0.50 BB (5 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP ($62.75)
Button ($11.80)
Hero ($90.15)
BB ($10.80)
UTG ($86.95)

Preflop: Hero is SB with T, 9.
3 folds, Hero completes, BB checks.

Flop: ($1) 5, 2, 9 (2 players)
Hero bets $1, BB raises to $2, Hero calls $1.

Turn: ($5) A (2 players)
Hero bets $2.5, BB raises to $8.3, Hero calls $5.80.

River: ($21.60) K (2 players)

Final Pot: $21.60