NFL pass interference rule 2019: Explaining the new challenge, replay process for PI
Behind the scenes at the NFL's new replay review center in New York - Sports Illustrated
NFL rule changes 2019: Teams want instant replay and overtime changes, NFL, Sport
Can you challenge pass interference in the NFL? Replay rules and more about OPI, DPI in 2020
NFL won't change overtime rules despite Chiefs' push for both teams to get possession
Players Can Now Wear No. 0 as Part of NFL Rule Changes
30 Changes Needed In Sports. I love sports. There is so much to love…, by Peter Bobrinskoy
Inside the Problematic New Pass Interference Replay Rule - The Ringer
Georgia to consider instant replay for high school football games
NFL review system puts ESPN, Fox, CBS and NBC in tough spot - Sports Illustrated