2 very thin value river raise possibilities

[PleasureGuy69]

First one:

Is there ANY value in raising?

Villain is 25/23/2.5 with river AF of 1.00 but only after 60 hands

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 5 Players - (LegoPoker HH Converter)

SB: $50.25
Hero (BB): $160.80
UTG: $50.00
CO: $117.85
BTN: $94.95

Preflop: Hero is dealt 9[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] (5 Players)
3 folds, <font color="red">SB raises to $1.50</font>, Hero calls $1.00

Flop: ($3) 7[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">SB bets $2.50</font>, Hero calls $2.50

Turn: ($8) 8[img]/images/graemlins/heart.gif[/img] (2 Players)
SB checks, Hero checks

River: ($8) 9[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">SB bets $5.00</font>, Hero ??



----------------------------

2nd hand:

Again, is there any value in raising?

No stats on villain:

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $106.25
BB: $55.20
UTG: $11.90
Hero (MP): $67.25
CO: $55.55
BTN: $33.30

Preflop: Hero is dealt J[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/club.gif[/img] (6 Players)
UTG folds, <font color="red">Hero raises to $1.75</font>, 3 folds, BB calls $1.25

Flop: ($3.75) 8[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $2.00</font>, BB calls $2.00

Turn: ($7.75) 5[img]/images/graemlins/diamond.gif[/img] (2 Players)
BB checks, Hero checks

River: ($7.75) J[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">BB bets $7.00</font>, Hero ??