villain is unknown , basically first hand at the table

No-Limit Hold'em, $0.05 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

BB ($5)
UTG ($3.95)
MP ($5.40)
Hero (CO) ($5.33)
Button ($3.67)
SB ($9.02)

Preflop: Hero is CO with K, 3
2 folds, Hero bets $0.17, Button calls $0.17, 2 folds

Flop: ($0.41) 7, 3, A (2 players)
Hero bets $0.20, Button calls $0.20

Turn: ($0.81) 10 (2 players)
Hero checks, Button bets $0.30, Hero calls $0.30

River: ($1.41) 3 (2 players)
Hero checks, Button bets $0.50, Hero raises $2.65, 1 fold

Total pot: $2.41