Possible Clues:

• Former Yankee manager who's now an MLB exec
• One of four men who managed both the Mets and Yankees
• Joe who managed the Mets, Braves, Cardinals, Yankees and Dodgers
• See 34-Across
• 2014 Cooperstown inductee Joe
• Yankee manager after Showalter
• Former Yankee manager who also served as player-manager of the Mets
• Jeter's skipper
• World Series-winning manager of 1998, 1999 and 2000