Yankees retired numbers: A look at all of the jersey numbers players cannot wear in the Bronx
Judge hits 3 home runs, becomes first Yankees player to do it twice in one season
Red Sox sweep Yankees as losing streak hits 8 - CBS Boston
New York Yankees to retire Paul O'Neill's No. 21 on Aug. 21
Retired Numbers
New York Yankees Retired Numbers Vinyl Decal Stickers
Boston Red Sox - Wikipedia
Red Sox legend Tim Wakefield dies at 57 after battle with brain cancer
Curse of the Bambino - Wikipedia
Now that Ortiz is up, whose is the next retired number for Red Sox? - The Boston Globe