Busted Draw or does he have a hand?

[Total Luck]

I posted this by mistake in the MTT section so i am reposting here:
Live Single table at The BIKE Sat. $80 buy in
t700 starting chips
blinds t25/t25 everyone about equal with t650-t800
i have t700 sb has t650 after post

6 hands in and everyone is folding around so far. no flops yet

UTG with A [img]/images/graemlins/spade.gif[/img] J [img]/images/graemlins/diamond.gif[/img]
I raise to t75
folds around to SB who just Calls BB folds

Flop:
Q [img]/images/graemlins/club.gif[/img] 8 [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/diamond.gif[/img]

SB checks
UTG c-Bets t75
SB calls

turn:
J [img]/images/graemlins/heart.gif[/img]
SB checks
UTG bets T150
sb Calls
River:
2 [img]/images/graemlins/heart.gif[/img]

Sb push all -in for T375 more
utg- call? or fold? what do you put him on here? did i overcommit this hand?