Officials' Responsibilities & Positions | NFL Football Operations
All the Gear Super Bowl 50 Refs Will Use to Call the Game | WIRED
Who Are the NFL's Best, Worst Refs? | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
NFL Officials: Preparing for Success | NFL Football Operations
US referee numbers are plunging and aggression is to blame | Referees | The Guardian
Why Do NFL Referees Have Numbers on Their Uniforms?
What do the letters stand for on the back of football referees' shirts? - Quora
NFL Relaxes Restrictions on Jersey Numbers - The New York Times
Ask Sam Farmer: Are there throwback uniforms for NFL officials? - Los Angeles Times
What Do Football Referee Letters Stand For?
How do the NFL's new overtime rules affect the Patriots?
NFL Officials: Preparing for Success | NFL Football Operations
Why Football Referees Have Letters & Numbers – vIQtory Sports
Yeah, the O-line is important, but referees are Tom Brady's best friends
Super Bowl LIV: How NFL Measures First Downs Is Primitively Low-Tech
Empty stadium impact on referee decisions, home field advantage - Sports Illustrated
Ask Farmer: Why do NFL referees have numbers? - Los Angeles Times
Why do college football referees have an 'S' on their uniform? - Quora
Law 5 - The Referee
Why Football Referees Have Letters & Numbers – vIQtory Sports
How Much Are NFL Referees Paid? | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
College football referees have an impossible job. Here's why - Sports Illustrated
Super Bowl 2022 referee, officials: Who is assigned to Rams vs. Bengals? | Sporting News
Misogyny greets World Cup's first female refs – DW – 06/29/2022
Why Football Referees Have Letters & Numbers – vIQtory Sports
