NFL: How the New Kickoff Rule May Hurt Football - WSJ
NFL Notes Week 14: Dumping the kickoff is an idea whose time has come
Which XFL rules should the NFL consider stealing? - ESPN
New Kickoff Rules Will Require Adjustments
A look at how the NFL's new kickoff rules have affected returns
Why big changes to NFL kickoffs could be on the horizon - ESPN
New kickoff rule would completely screw over Packers
New kickoff rule approved for 2018