Replay review in gridiron football - Wikipedia
New NFL rules for 2023: league adopts changes to replay, fourth-downs
NFL rule change essentially eliminates kickoffs for 2023 season
NFL overtime rules 2023: Explaining how the OT format works in football for regular season, playoffs
NFL Rulebook NFL Football Operations
New crackdown NFL laws revealed ahead of 2023 season with fans fearing 'games are never going to end'
Why big changes to NFL kickoffs could be on the horizon - ESPN
NFL Rulebook NFL Football Operations
NFL considering several major rule changes for 2023: Touchbacks could be modified on both punts and kickoffs