William Frazer Baker was the owner of the Philadelphia Phillies of the National League from 1913 through 1930 and New York City Police Commissioner from 1909 to 1910.

The New York City Police Commissioner is the head of the New York City Police Department and presiding member of the Board of Commissioners. The commissioner is appointed by and serves at the pleasure of the mayor. The commissioner is responsible for the day-to-day operations of the department as well as the appointment of deputies including the Chief of Department and subordinate officers. Commissioners are civilian administrators, and they and their subordinate deputies are civilians under an oath of office, not sworn members of the force. This is a separate position from the Chief of Department, who is the senior sworn uniformed member of the force. The First Deputy Commissioner is the Commissioner and department's second-in-command. The office of the Police Commissioner is located at the NYPD Headquarters, One Police Plaza. Both the commissioner and first deputy commissioner outrank all uniformed officers, including the chief of department.