Sure looked like it didn't it. But, autopsy showed it was a small bladed knife. Mark Fuhrman found an empty Swiss Army Knife box in O.J.s' bathroom. It was apparently new. They never found the knife and O.J. wasn't talking.
That was thought to be the reason for OJ's trip to Chicago right after the murders, he went there to dump the knife at O'Hare -- the garbage bins were checked but they have a substantial garbage removal system and by the time it was realized what had happened, the trash had been removed. (I remember hearing all about it, since I lived in Chicago at the time.)
It was probably in that infamous sealed envelope brought into court--that never did get opened...(or something like that).