Study finds influence of smaller jersey numbers on perception - ESPN
NFL Football Operations on X: .@NFL owners approved a rule change proposed by the @Chiefs expanding jersey number options for certain positions. Check out the full list of 2021 rule changes
Sidy Sow blazes his own trail from Quebec to the NFL
NFL Color Rush - Wikipedia
NFL jersey number restrictions could change for running backs, receivers, tight ends, linebackers, defensive backs
Tom Brady rips NFL's new jersey number rule before Cowboys game - Sports Illustrated
Tom Brady Eviscerates NFL Over New Jersey Number Rule Change, 'DUMB'
Authentic vs. Replica Jersey Differences & Buying Guide
More Numbers and Fewer Cut Dates: NFL Approves Rule Changes