More Numbers and Fewer Cut Dates: NFL Approves Rule Changes
The N.F.L.'s Carl Nassib Broke a Barrier. Will Others Follow? - The New York Times
NFL Football Operations – Locker-Report
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
Adrian Peterson's number, explained: Why Titans RB isn't wearing his typical No. 28 jersey
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