Chiefs' jersey-number rule change passes NFL ownership vote - Arrowhead Pride
Tom Brady Dislikes NFL's New Number Rule – SportsLogos.Net News
NFL passes jersey number expansion rule, meaning more single digits are coming - Acme Packing Company
NFL jersey number restrictions could change for running backs, receivers, tight ends, linebackers, defensive backs
Dominant Digits -- The 10 most popular jersey numbers among current NFL players - ESPN
16 NFL players who could get new jersey numbers after rule change
NFL Jersey Numbers NFL Football Operations
NFL owners pass rule expanding eligible jersey numbers for certain positions
What Players Have Worn Football Jersey Number 5? - SportsRec