Eagles Question of the Day: How do you feel about the team's unofficial retired jersey numbers? - Bleeding Green Nation
Yankees Retired Numbers
Yankees Retired Numbers
All-Time Brooklyn & Los Angeles Dodgers Retired Numbers
History of retired numbers dates back to Lou Gehrig Day
Fresno State to retire numbers of Aaron Judge, Mike Batesole
Has the NFL Ever Retired a Player's Jersey Number League-Wide?
Yankees Retired Numbers
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
NBA -- Inside the numbers on the NBA's retired numbers - ESPN