BB Special - No one raises this river right?

[Unarmed]

$10 PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) converter

UTG (t1550)
UTG+1 (t1160)
MP1 (t1710)
MP2 (t1720)
MP3 (t1400)
CO (t1420)
Button (t2660)
SB (t380)
Hero (t1500)

Preflop: Hero is BB with 4[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
UTG calls t20, UTG+1 calls t20, <font color="#666666">1 fold</font>, MP2 calls t20, <font color="#666666">1 fold</font>, CO calls t20, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (t120) 8[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, Hero checks, UTG checks, UTG+1 checks, MP2 checks, CO checks.

Turn: (t120) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, Hero checks, UTG checks, UTG+1 checks, MP2 checks, CO checks.

River: (t120) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">SB bets t20</font>

[Strollen]

Why not raise to 80 or 100? No flushes 35 and 56 the only straights. Very unlikely there is a set.

Who will call you? a pair of aces, K8, A8 and possibly and pair of 7 and the SB on what ever he has. Could there be a better two pair sure and if you get a big reraise well you probably fold.

[Unarmed]

[ QUOTE ]
Why not raise to 80 or 100? No flushes 35 and 56 the only straights. Very unlikely there is a set.

Who will call you? a pair of aces, K8, A8 and possibly and pair of 7 and the SB on what ever he has. Could there be a better two pair sure and if you get a big reraise well you probably fold.

[/ QUOTE ]

Well, A8 has me beat and I'm fairly certain K8 and 7x aren't calling a raise there. They might call the 20 though. Only a weak weak ace checks that down to the river and SB has already led for 20...I don't see him calling the raise given he played it that weakly so far.