As we look to the future of the NFL in 2014, we move the game forward.
Some things are for safety and some things are to bring more excitement in to the sport.
Already there has been suggestions for the next proposed rules including changes tot he extra point and roster sizes.
All of these look pretty obvious and plain sailing. But in times past, not everything has gone as it should.
And like the the soon to be replaced double points in Formula 1, they've hit the floor after being used, approved or even suggested.
Let's look back at five of the worst...