Clint Frazier reportedly asked the Yankees if they would un-retire Mickey Mantle's No. 7
New York Yankees Retired Numbers: A list of legends who have had their Pinstripes retired over the years
Buckley: Red Sox should retire these uniform numbers – Boston Herald
Yankees to retire Joe Torre's number; Gossage, Martinez and O'Neill get plaques
Aaron Judge's free agency: How a small inner circle and a 3 a.m. phone call kept him a Yankee - The Athletic
New York Yankees: 5 numbers that need to be un-retired
What same jersey number was retired twice? - Quora
Cole enhances Cy Young credentials with 8 outstanding innings as Yanks beat Jays 5-3, Sports
Yankees Retired Numbers
Yankees' Domingo Germán pitches perfect game - CBS News
Why baseball's June 'un-retirements' are a thing of the past
Now That No. 17 Is Retired, The Mets Should Retire Gary Carter's No. 8 Next - NY Sports Day
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Why has there been a dizzying level of money and term in baseball free agency this year? - The Boston Globe
Why don't the Miami Marlins have any retired numbers?