The NFL's Secret Drug Problem - Men's Journal
10 unwritten rules for not screwing up your NFL jersey number
NFL owners pass rule expanding eligible jersey numbers for certain positions
16 NFL players who could get new jersey numbers after rule change
Why Baseball Isn't Fun Anymore - The Atlantic
14 Unwritten Rules Of Being A Dallasite - Fort Worthian
Column: Never a doubt NFL season would start; what happens now is a mystery, as usual - The San Diego Union-Tribune
Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
As Colin Kaepernick's Gesture Spreads, a Spirit Long Dormant Is Revived - The New York Times
Do the Packers follow SB Nation's unwritten rules about jersey numbers? - Acme Packing Company
NFL likely to pass rule allowing more single-digit jersey numbers