1993 Leaf #326 Greg Maddux - NM-MT
Minter regrets not attacking Maldonado in strike zone
Starting Nine: A study in No. 41, Eddie Mathews - Battery Power
January, 2021
Big Three (Atlanta Braves) - Wikipedia
The History of Relief Pitching Part Four: 1988-Present - Cooperstown Cred
Why is the battery in baseball (pitcher-catcher duo) such a big deal? - Quora
Starting Nine: A study in No. 31, Greg Maddux - Battery Power
Starting Nine: A study in No. 29, John Smoltz - Battery Power
The Baseball 100: No. 31, Greg Maddux - The Athletic
Starting Nine: A study in No. 29, John Smoltz - Battery Power
Prime 9: Greg Maddux, 12/07/2021
Starting Nine: A study in No. 31, Greg Maddux - Battery Power