Which is the worst play here

[kiemo]

Stars $6 turbo NL SNG

UTG: (820 in chips)
CO: (645 in chips)
SB: (5000 in chips)
BB: (3705 in chips)
UTG: (3330 in chips)

Blinds are 75/150

UTG raises to 450. All fold to BB. BB calls

Flop 2 [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/spade.gif[/img] 3 [img]/images/graemlins/club.gif[/img]

BB bets 450. UTG goes all-in. BB calls.

UTG has 44
BB has 66

Rest of hand is irrelevant.

I am trying to determine where the mistakes were made in this hand and who played it worse out of the 2 participants.