When did the nfl change the
- when did the nfl change the pass interference rule
- when did the nfl change the 2 feet rule
- when did the nfl change the kickoff line
- when did the nfl change the kickoff lineup
- when did the nfl change the number rule
- when did the nfl change the playoff format
- when did the nfl change the touchback rule
- when did the nfl change the overtime rules
- when did the nfl change the extra point distance
- when did the nfl change the kickoff rules
