HBO Sports and NFL Films are partnering with the Detroit Lions for an unfiltered all-access look at what it takes to make it in the National Football League with Hard Knocks: Training Camp with the Detroit Lions.
No Ravens As Cowboys Get Nod for HBO s Hard Knocks si.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from si.com Daily Mail and Mail on Sunday newspapers.