Villian sat as short stack of about $20 he is 50/8

Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($97.90)
Button ($118.68)
SB ($19.60)
BB ($43.49)
UTG ($50)
UTG+1 ($32.50)
UTG+2 ($0)
MP1 ($37.42)
MP2 ($13.10)
MP3 ($59)

Preflop: Hero is CO with 9, T. SB posts a blind of $0.25. UTG posts a blind of $0.50.
3 folds, MP3 calls $0.50, Hero raises to $2, 1 fold, SB (poster) calls $1.75, 1 fold, MP3 calls $1.50.

Flop: ($6.50) A, 9, 4 (5 players)
SB bets $2, MP3 folds, Hero raises to $6, SB calls $4.

Turn: ($18.50) 8 (4 players)
SB bets $5, Hero ?