New York Mets - Wikipedia
San Francisco Giants - Wikipedia
Umpire (baseball) - Wikipedia
Toronto Blue Jays - Wikipedia
Last player to wear No. 42 for each MLB team
Bryce Harper - Wikipedia
Minnesota Twins - Wikipedia
Retired number - Wikipedia
Every MLB team's retired numbers – NBC Sports Chicago
Retired number - Wikipedia
Kansas City Royals - Wikipedia
Miami Marlins - Wikipedia
Every MLB team's retired numbers
Retired number - Wikipedia
Rollie Fingers, Milwaukee Brewers Wiki