NFL players can now wear No. 0 among rule changes
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Friday Round-Up: Seven Seahawks Legends Named Best Player To Ever Wear Jersey Number By Touchdown Wire
Officials' Responsibilities & Positions
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Accountability: Fines & Appeals
Notable Players to Wear No. 4
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NFL doesn't allow players to switch numbers during season - NBC Sports
NFL jersey ads feel inevitable, but they'd be complicated - Sports Illustrated
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