Party Poker 10/20 Hold'em (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Preflop: Hero is SB with J, K.
2 folds, Hero raises, BB calls.

Flop: (4 SB) 4, 4, 8 (2 players)
Hero bets, BB raises, Hero 3-bets, BB calls.

Turn: (5 BB) 5 (2 players)
Hero bets, BB calls.

River: (7 BB) 5 (2 players)
Hero checks, BB bets, Hero calls.

Final Pot: 9 BB

Results in white below:
Hero has Jc Ks (two pair, fives and fours).
BB has 9d 7d (two pair, fives and fours).
Outcome: Hero wins 9 BB.

All I can say in my defense, is that BB is a TAG, His raise on the paired board I assumed was a common defense line and the fact that I 3bet him affirmed that fact. I didn't want to bet the river because only a better hand would call. BUT, a worse hand would bet at it and thus I got that last bet out of him. I still think I'm a fish though and I couldn't even put him on an Ace, as he would have reraised preflop with that.