Why big changes to NFL kickoffs could be on the horizon - ESPN
Evolution of the NFL Rules
Kickoffs recovered by the kicking team for a touchdown – Quirky Research
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Technology and the Game NFL Football Operations
Officials on the lookout for field goal holders illegally placing football on foreign objects - NBC Sports
Four Tennessee Volunteers sign as NFL undrafted free agents
The 'worst rule in football' isn't wrong at all
Game 272: The history of the final flexed game of the season – Quirky Research
New NFL Kickoff Fair Catch Rule for 2023 Explained - HowTheyPlay