NFL schedule-release date, plus owners approve several rule
NFL Rule Changes for 2021 Season Proposed, Including Expanded
NFL Passes Multiple Rule Changes, Including Relaxing of Jersey
Loosened jersey number restrictions and no overtime in preseason
NFL Health and Safety Related Rules Changes Since 2002
Chiefs' jersey-number rule change passes NFL ownership vote
Changes to overtime, jersey numbers among 11 rule proposals on
NFL changes football playoff overtime rule
NFL approves 0 jersey number, one preseason cut day among new changes