Related Clues:

• Source of all the quotes in this puzzle
• Hall of Fame catcher
• Quotable catcher
• He said "It ain't over till it's over"
• Legendary catcher
• Source of quote
• 'I never said half the things I said' sayer
• "It ain't over 'til it's over" sayer
• "The Iron Horse," baseball's all-time 50-Across recordholder
• Babe Ruth teammate
• "It ain't over 'til it's over" speaker
• Baseball player, for the New York Yankees, in the 1920s and 30s
• Who said 'Always go to other people's funerals, otherwise they won't go to yours'
• He said, 'It ain't over 'til it's over, Gary' — or I be mistaken!
• Yankees retired number 8