Ask Farmer: What do the stars under the 'C' of the captain's football jersey mean? - Los Angeles Times
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NFL jersey ads feel inevitable, but they'd be complicated - Sports Illustrated
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B/R Gridiron] The NFL is expected to pass a rule that will relax jersey number restrictions, per @peter_king — QB: 1-19 — WR: 1-49, 80-89 — RB: 1-49, 80-89 — TE: 1-49, 80-89 — DB: 1-49 — LB: 1-59, 90-99 — OL: 50-79 — DL: 50-79, 90-99 : r/nfl
They Put the C on His Chest: Eddie Jackson is a Chicago Bears Captain - Bleacher Nation
National Football League team captains - Wikipedia