Kansas City Chiefs' proposed jersey number rule approved by NFL owners
The NFL Jersey Number Rule Explained - HowTheyPlay
NFL approves alternate helmets starting in 2022
NFL jersey number restrictions could change for running backs, receivers, tight ends, linebackers, defensive backs
NFL passes expanded jersey number rule - NBC Sports
Expanded use of jersey numbers among approved NFL rule changes for 2021 - Pats Pulpit
NFL Jersey Numbers NFL Football Operations
2021 N.F.L. Rule Changes: A Viewer's Guide - The New York Times
NFL owners approve rule changes, including no preseason overtime and expanded jersey number options, NFL News
NFL To Vote On Proposal To Reduce Restrictions On Jersey Numbers – SportsLogos.Net News
NFL rumors 2021: Proposed rule allowing more players to wear single digits 'likely to pass' (report)