Which pro sports teams have the most retired numbers?

Only 3 Legendary Athletes Have Their Numbers Retired League Wide

Every MLB team's retired numbers

How many NBA players have numbers retired by multiple teams? Is

How many uniform numbers are retired by the New England Patriots?

Bill Russell's No. 6 Joins Rare Class of Retired Jersey Numbers

Crunching the Numbers: College Basketball Players Can't Wear 6, 7

Southern California teams' retired numbers – Orange County Register

Canadiens' Retired Jerseys - the Story of a Famed Franchise

Every MLB team's retired numbers – NBC Sports Chicago

List of National Football League retired numbers - Wikipedia

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