After the Arizona Diamondbacks retired the number of Luis Gonzalez, I began receiving a lot of questions from fans visiting Chase Field asking who wore number 42 for the Diamondbacks and who it is hanging next to Gonzo’s number.

On the 50th anniversary of Jackie Robinson breaking the major league color barrier, Major League Baseball Commissioner Bud Selig retired the number 42 throughout baseball. From that point forward no player could wear number 42 although players wearing that number at the time were allowed to continue wearing it until retirement. This occurred on April 15, 1997 nearly a year before the Arizona Diamondbacks would play their first game as a franchise.


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