The Raiders fortified their secondary in Thursday's NFL Draft, adding West Virginia safety Karl Joseph with the No. 14 overall pick. Joseph was productive in a shortened season in 2015, intercepting five passes in the first four games before tearing his anterior cruciate ligament. That injury could slow his impact at the NFL level. - See more at: http://www.mercurynews.com/raiders/ci_29827210/nfl-draft-raiders-take-safety-karl-joseph-no
