50NL Tough spot on river with 99

[dimeetrees]

Full Tilt Poker No-Limit Hold'em, $0.50 BB (6 handed) Hand History converter Courtesy of PokerZion.com

SB ($51.85)
BB ($58.80)
UTG ($88.25)
MP ($51.55)
Hero ($57.25)
Button ($100.75)

Preflop: Hero is CO with 9[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">UTG raises to $1.75</font>, <font color="#666666">1 fold</font>, Hero calls $1.75, <font color="#666666">2 folds</font>, BB calls $1.25.

Flop: ($5.50) 5[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, UTG checks, <font color="#CC3333">Hero bets $4</font>, BB calls $4, UTG folds.

Turn: ($13.50) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $8</font>, Hero calls $8.

River: ($29.50) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $19.5</font>, Hero ???

Final Pot: $49

I have to think im beat, Villian is 17/14/3.5 over 1,400 hands...

His line is way too strong here, but at the same time im not sure what hes trying to represent.