Auburn Doubledays. The Auburn Doubledays are the Short-Season Class A affiliate of the Washington Nationals. While professional baseball in Auburn, NY dates back to the late 1870s, the current incarnation of the team traces its roots back to 1957 and the formation of Auburn Community Owned Non-Profit Baseball Association Inc. Auburn Community Baseball, as the company is commonly known, began operating the Auburn Yankees of the New York-Penn League in 1958. The team was renamed Doubledays in 1996 in honor of Civil War general Abner Doubleday. The Auburn native is apocryphally credited with inventing the game of baseball. The team mascot Abner wears number 96 in honor of the birth of the team in 1996.