Cities With the Most Professional Sports Franchises
How Many Jersey Numbers have been Retired in the NFL?
Should these Browns Pro Football Hall of Famers have their jersey
List of National Football League retired numbers - Wikipedia
Southern California teams' retired numbers – Orange County Register
The most random number retirements across all sports
The Cities with Too Few (or Too Many) Sports Teams
How many uniform numbers are retired by the New England Patriots?
NBA Teams With the Most Retired Numbers
All 32 NFL team's retired jersey numbers - ESPN - NFL Nation- ESPN
A number of nuggets about retired numbers around the Major League