What to expect from NFL officiating in 2020 - coronavirus protocols, electronic whistles and inexperience - ESPN
Implementation and Evolution of Mitigation Measures, Testing, and Contact Tracing in the National Football League, August 9–November 21, 2020
Instant replay officials may work college football games virtually in 2020 amid coronavirus
Playful escape': How sport is tackling coronavirus pandemic, Coronavirus pandemic
Source - NFL prepping COVID-19 ref plan for Sunday's games - ESPN
COVID-19 remains biggest opponent for Big Ten football teams
NFL Crisis Grows - The New York Times
College Football Rule Changes: Quicker Replays, Zeros on Jerseys and Social Distancing - The New York Times
How COVID-19 is still causing problems for the NFL - The Boston Globe
ACC Football 2020 schedule changes due to COVID-19 Pandemic - Cardiac Hill
N.H. referees prep for fall COVID-19 sports season
CDC - A new CDC report shows how the NFL used strategies, including frequent testing, strict mask use, outdoor meetings when possible, and contact tracing to prevent COVID-19 spread within the league.