Villian is 39/5/.8 over small sample.

Full Tilt No-Limit Hold'em, $0.25 BB (8 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

UTG ($28.55)
UTG+1 ($46.65)
MP1 ($12.62)
MP2 ($23.05)
Hero (CO) ($25.23)
Button ($24.65)
SB ($23.04)
BB ($25.91)

Preflop: Hero is CO with A, 4
1 fold, UTG calls $0.25, 2 folds, MP2 calls $0.25, Hero calls $0.25, 1 fold, SB checks

Flop: ($1) 10, 6, 2 (4 players)
SB bets $0.25, UTG calls $0.25, MP2 raises to $1, Hero raises to $3, 1 fold, UTG calls $2.75, 1 fold

Turn: ($8.25) 6 (2 players)
UTG bets $4.50, Hero calls $4.50

River: ($17.25) J (2 players)
UTG bets $17.25, Hero?