D'Andre Swift takes No. 0 as Eagles announce jersey numbers
2021 N.F.L. Rule Changes: A Viewer's Guide - The New York Times
NFL jersey number restrictions could change for running backs, receivers, tight ends, linebackers, defensive backs
Full list of NFL players switching to No. 0 jersey in 2023: D'Andre Swift, Brian Burns headline group
Dear NFL, Change The Uniform Number Rule - Turf Show Times
Eagles' proposal to allow players to wear No. 0 among nine rule-change submissions
NFL Jersey Numbers NFL Football Operations
NFL players can now wear No. 0 among rule changes
NFL jersey number updates: Tracking which NFL players wear No. 0 - ESPN