SEC to experiment with 8 football officials, but what's right number? - CBSSports.com
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NFL makes history with all-Black officiating crew for Monday night football
9 USFL officials selected to work in NFL for upcoming 2023 season | FOX Sports
Youth Football Officials Association Referee Agreement - Referee Letters In Football | US Legal Forms
Ed Hochuli, N.F.L. Referee, Has Long Had Fan Support - The New York Times
Ask Sam Farmer: Are there throwback uniforms for NFL officials? - Los Angeles Times
Preseason officiating: no referee tryouts, no development officials, no 8th official experiments planned – Football Zebras
Officials' Responsibilities & Positions | NFL Football Operations
Who Made That Referee Shirt? - The New York Times
Official (gridiron football) - Wikipedia
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Referees at Monday Chiefs game as bad as Biden appointees | The Kansas City Star
Ask Farmer: Why do NFL referees have numbers? - Los Angeles Times
What do the letters stand for on the back of football referees' shirts? - Quora
Fans spot bizarre detail on referee's shirt during England's World Cup opener - did you? | The US Sun
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What do the letters stand for on the back of football referees' shirts? - Quora
