MLB Tenure and Age Records
Randy S. Robbins – SABR's Baseball Cards Research Committee
Al Oliver - Cooperstown Expert
The Numbers Game: Baseball's Lifelong Fascination with Statistics: Schwarz, Alan, Gammons, Peter: 9780312322236: : Books
Al Oliver Cards Trading Card Database
The Numbers Game: Baseball's Lifelong Fascination with Statistics: Schwarz, Alan, Gammons, Peter: 9780312322236: : Books
Dusty Baker Stats & Facts - This Day In Baseball
Rennie Stennett Baseball Stats by Baseball Almanac
August 4, 2018: Oliver Drake sets major-league record by pitching for fifth team in one season – Society for American Baseball Research
Mike Schmidt, Baseball Wiki
Al Oliver - Cooperstown Expert
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