Kansas City Royals - Wikipedia
Most Popular Sports Team (professional or collegiate) in Every State. The MLB is still not the cool kids league. (X-Post from r/nfl) : r/baseball
A number of nuggets about retired numbers around the Major League
NBA Teams With the Most Retired Numbers
Why are NBA players wearing No. 6 on their jerseys? – NBC Sports Boston
Retired number, sports award
What is the most popular professional sports team in the US? - AS USA
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Infographic: Packers' retired numbers
Are there any jersey numbers that are retired across all teams? - Quora
The most random number retirements across all sports
How Many Jersey Numbers have been Retired in the NFL?
List of National Football League retired numbers - Wikipedia
Joe Namath would allow Aaron Rodgers to wear retired number with Jets
The most random number retirements across all sports