List of retired numbers in association football - Wikipedia
Retired number - Wikipedia
10 Legendary NBA Players whose Jersey Numbers were Retired
The Two Numbers You'll Never See Any Saints Player Wear Again
Every player in Boston Celtics history who wore No. 55
Fascinating Aspects About the Retired Uniform Numbers of the Detroit Tigers – Society for American Baseball Research
15 NBA Players Who Have Their Jersey Retired By Multiple Teams - Fadeaway World
Miami Marlins retired numbers
Largent shares details of decision to let Rice wear No. 80 - NBC Sports
Every NBA Team's Retired Numbers - Fadeaway World
NBA jersey retirements: Kobe's two numbers, Jordan's jersey in Miami without playing and other curiosities
L.A. Rams retired jersey numbers: Stars from the past left to consider - Turf Show Times
Buffalo Bills: O.J. Simpson jersey number 32 given to Senorise Perry
Who was the best player on the Lakers before Kobe Bryant retired? - Quora