Often-overshadowed Mack eager to prove himself

Daily Raiders blog for NBC Bay Area website: Jadeveon Clowney was the No. 1 pick in the NFL draft, but the Raiders took Khalil Mack at No. 5, and he's driven to prove he was the best player. http://www.nbcbayarea.com/news/sports/Macks-Attitude-May-Drive-Him-to-Excel-With-Raiders-259224541.html