[1] During their time as a Major League team, the Senators employed 12 managers.
[1] Trott managed the Senators for 12 games before being replaced by Pop Snyder.
[2] Tom Brown and Jack Doyle share the Senators' record for highest winning percentage as manager, with .471.
[2] Arthur Irwin is the only Senators manager who served more than a single term.
[4] Jim O'Rourke is the only Senators manager to be inducted into the Baseball Hall of Fame.