25 NL: Totally standard (nut) straight fold?

[Shattered]

Villain is 70/0/.9 over 20 hands.

Poker Stars, $0.10/$0.25 NL Hold'em Cash Game, 4 Players
LegoPoker Hand History Converter

SB: $15.25
Hero (BB): $44.60
UTG: $24.75
BTN: $11.20

Pre-Flop: Q[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img] dealt to Hero (BB)
UTG folds, <font color="red">BTN raises to $0.75</font>, SB calls $0.65, Hero calls $0.50

Flop: ($2.25) 2[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/club.gif[/img] (3 Players)
SB checks, Hero checks, BTN checks

Turn: ($2.25) A[img]/images/graemlins/diamond.gif[/img] (3 Players)
SB checks, <font color="red">Hero bets $1.75</font>, BTN folds, SB calls $1.75

River: ($5.75) 8[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">SB bets $5</font>, Hero folds

Results: $5.75 Pot ($0.25 Rake)
SB mucked and WON $5.50 (+$3 NET)