USFL to use fourth and 12 play as onside kick alternative; will NFL be next? - NBC Sports
Onside Kick Rules: A Comprehensive Guide, by Wiack
The Death of Onside Kicks: Why NFL Rule Changes May Have Inadvertently Eliminated Them - Optimum Scouting
After last year's pass interference debacle, NFL didn't have appetite for major rule changes - The Boston Globe
A look at how the NFL's new kickoff rules have affected returns
NFL kickoff rule: Here's what changed in 2018 and what it means
XFL 2023 Rules Explained, Their Differences from NFL Rules
NFL implements new kickoff rules - ESPN Video
NFL Pro Bowl rule changes, explained: Here's what's new for 2020, including no-kickoff experiment
Rapoport] The NFL has passed a new rule instituting all fair catches and touchbacks come out to the 25-yard line on kickoffs, source said. Now the same as the college rule, the