O.J. Simpson: No DNA on Buried Knife“If the knife is rusted, I can’t be busted.”Friends Read FreeSaveO.J. Simpson is currently serving a nine-to-33-year sentence in state prison as a result of his October 2008 conviction for armed robbery and kidnapping charges. (Ethan Miller/Getty Images)By Dave Martin3/15/2016Updated: 3/15/2016PrintREAD MOREO. J. Simpson: Former NFL Player Says Knife Found on Estate Is Not Tied to Murder of Ex-wife, Report Says