Del Rio hiring may bring out the best in Mack and Moore

Daily Raiders blog for NBC Bay Area website: Former Pro Bowl linebacker Jack Del Rio has been praised in the past for his work with linebackers. Might his hiring provide a boost for young standouts such as Khalil Mack and Sio Moore? http://www.nbcbayarea.com/news/sports/Del-Rio-Hire-Might-be-Great-for-Khalil-Mack-288549441.html