NFL jersey numbers: Owners approve rule change on single digits
How Are NFL Jersey Numbers Decided? – Squad Numbers
Tom Brady slams NFL's jersey number rule: 'Dumb
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Ramsey and Woods jostle for No. 2 jersey after Rams tease single-digit numbers
NFL owners approve change to jersey-number restrictions
Number (sports) - Wikipedia
New single-digit jersey rule approved by NFL owners
NFL likely to pass rule allowing more single-digit jersey numbers
New NFL jersey number rules allow single digits for defense
