What's the Deal With the NFL's Replacement Referees?
With Referees Out, N.F.L. Players Throw Flag on Novice Fill-Ins
Holding flags a topic of NFL ref conference call - ESPN
NFL referees throw record-breaking amount of flags - The Aggie
Ten Years Later, the Failed Lessons From the Fail Mary - The Ringer
Why do football referees say the name of the team when announcing
Ron Cherry's penalty call: He was giving him the BUSINESS
Report: NFL Planning To 'Crack Down' On Controversial Play In Week
Jamaal Williams hits ref in the head with football & apologizes
Holding calls plummet after call to referees - ESPN
Referee who threw controversial flag in Steelers-Chiefs game
Debate continues over the controversial holding call in the Chiefs