Dallas Cowboys Jersey Number Changes: Did Anyone Take No. 0?
Cowboys Doomed by Miscues Against 49ers' Defense - The New York Times
NFL jersey number updates: Tracking which NFL players wear No. 0 - ABC7 New York
Roquan Smith Explains Jersey Number Change to Zero
NFL players can now wear the number zero on their jerseys
Which 49ers player should wear No. 0 on jersey?
Eagles unveil jersey numbers; D'Andre Swift to wear No. 0
NFL has not yet approved emergency QB rule
Picking a jersey has uniform appeal among 49ers' players and fans
49ers Samuel Womack is the first player in Niners' history to wear No. 0 - Niners Nation
NFL's relaxed jersey rules: Meet the players who now wear No. 0
NFL San Francisco 49ers Nike Vapor Untouchable (Jerry Rice) Men's Limited Football Jersey.
San Francisco 49ers - Wikipedia
NFL jersey number updates: Tracking which NFL players wear No. 0 - ESPN
49ers news: Jason Verrett is switching his jersey number from No. 22 to No. 2 - Niners Nation