The Oakland Raiders have signed former Cincinnati Bengals safety Reggie Nelson to a two-year, $12 million contract. Nelson is a one-time Pro Bowl selection. Nelson, 32, led the NFL with eight interceptions last season. He could have re-signed with the Bengals, but they have moved on with Shawn Williams and George Iloka. Follow me on Twitter: @AaronWilson_NFL Aaron Wilson covers the Texans for The Houston Chronicle.