Rivered nut flush, but board paired Aces. Abort c/r?

[JoshNjuice]

Villain is 57.5/17.5/0.8 after 40 hands

I'm 20.4/16.3/oo after 48 hands at this table. I've caught some cards and gotten paid off well because of my aggression so far.

My plan was to c/r villain on river, but his overbet made me nervous (I hadn't seen him overbet a pot in 40 hands and he's played almost 60% of them).

PokerStars No-Limit Hold'em, $0.25 BB (5 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

Hero ($79.55)
BB ($33.10)
UTG ($27.45)
MP ($9.70)
Button ($20.95)

Preflop: Hero is SB with 9/images/graemlins/diamond.gif, K/images/graemlins/diamond.gif.
<font color="#666666">2 folds</font>, Button calls $0.25, Hero completes, BB checks.

Flop: ($0.75) A/images/graemlins/spade.gif, 6/images/graemlins/spade.gif, 5/images/graemlins/diamond.gif <font color="#0000FF">(3 players)</font>
Hero checks, BB checks, Button checks.

Turn: ($0.75) 4/images/graemlins/diamond.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $0.5</font>, BB folds, <font color="#CC3333">Button raises to $1.5</font>, Hero calls $1.

River: ($3.75) A/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $4</font>, Hero ???

Follow through with the c/r or just call?

[holyfield5]

cant go wrong with a call here, need a read you can trust to raise.

[Acein8ter]

I'd call it for $4 w/the nut flush. BUT, he bet on the Turn with? 44 for a set? Or maybe A4 for two pair? He hits a FH on the river... I'd take my chances and call it...

[rael]

Villian is really loose. Does anyone think he could have a straight?

I don't know the best way to interpret the overbet, but I've seen a lot of people overbet the river with questionable holdings on boards like this. Like a straight or just trips (although I would eliminate trip A from his range because of his turn raise). Not saying I would act on this without a read, but I would not be surprised at all if he turned over 78.

Anyway, I usually just call.

[barryc83]

River is not an overbet. He basically just pots the river, an overbet would be a shove. That being said I'm a wuss and def. flat call river.