battle of the blinds , trips very passive player betting

[Shes92]

Gday all

Just a quick query regarding the following hand. I had only played about 50 hands with this guy but in that time I hadnt seen him bet with anything but a strong hand. Stats were 48/15/0.8 over 50 hands or so. Its an autocall on the river in most situations but I really felt this guy had a decent hand. Im sure this is a call but just wondering if there is an argument for a fold. I guess if there is ever a fold here its on the turn??

Absolute Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter

Stack sizes:
UTG: $100
UTG+1: $15.40
CO: $47.65
Button: $55.40
Hero: $69.10
BB: $95.65

Pre-flop: (6 players) Hero is SB with 9[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/diamond.gif[/img]
4 folds, <font color="#cc0000">Hero raises to $2</font>, BB calls.

Flop: 9[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] ($4, 2 players)
<font color="#cc0000">Hero bets $2</font>, BB calls.

Turn: T[img]/images/graemlins/spade.gif[/img] ($8, 2 players)
<font color="#cc0000">Hero bets $4.5</font>, <font color="#cc0000">BB raises to $15</font>, Hero calls.

River: A[img]/images/graemlins/heart.gif[/img] ($38, 2 players)
Hero checks, <font color="#cc0000">BB bets $25</font>, Hero ??