200nl - AK - top 2 cr'd all in on river - dleep

[Fat Nicky]

villain is franklin bluth, an ftp reg and someone i would believe to be a winner at this level

he's 23/14/2.8, we don't have history i can recall. and we have not tangled today.

his river AF is 1.3.

Full Tilt Poker
No Limit Hold'em Cash Game
$1/$2 Blinds
6 Players - (LegoPoker Hand History Converter)

SB: $219.20
BB: $71.65
UTG: $118.75
MP: $552.65
Hero (CO): $354.30
BTN: $282.25

Preflop: Hero is dealt A[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG folds, <font color="red">MP raises to $7.00</font>, <font color="red">Hero raises to $24.00</font>, 3 folds, MP calls $17.00

Flop: ($51) 8[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/spade.gif[/img] (2 Players)
MP checks, Hero checks

Turn: ($51) A[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">MP bets $40.00</font>, Hero calls $40.00

River: ($131) K[img]/images/graemlins/diamond.gif[/img] (2 Players)
MP checks, <font color="red">Hero bets $90.00</font>, <font color="red">MP raises all-in to $488.65</font>, Hero ($200 for hero to call)

what is his range? and what does he put me on?