HUSNG: getting raised on the river

[emKay]

I've only played a few hands with him and he seems solid this far. I think flop and turn are pretty standard. I bet the river for value because he calls with lots of worse hands.
His raise just doesn't make sense. What legitimate hands would he play this way?


PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (2 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button (t1490)
Hero (t1510)

Preflop: Hero is BB with 8[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Button raises to t60</font>, Hero calls t40.

Flop: (t120) A[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets t80</font>, Hero calls t80.

Turn: (t280) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

River: (t280) 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t140</font>, <font color="#CC3333">Button raises to t600</font>