On September 11, 1886 — At Washington’s Swampoodle Grounds, backstop Connie Mack makes his major league debut when the Nationals, in a rare victory, edge the Philadelphia Quakers, 4-3. The journeyman catcher will post the most big league wins and losses as a manager, compiling a 3731-3948 (.486) record with the Pirates and A’s during his 53-year managerial career.

 


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Sources:
Baseball Reference September 11
National Pastime September 11
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game