49ers' Okoye says football is 'hardest thing' he's ever done

Daily 49ers blog for NBC Bay Area website: British Olympic discus thrower and former rugby player Lawrence Okoye, signed by the 49ers this spring as a potential defensive lineman, says his transition to football player has been very difficult. http://www.nbcbayarea.com/news/sports/Niners-Okoye-Football-is-Hardest-Thing-Ive-Ever-Done-213318031.html