Stephen Patrick Cusack (September 27, 1876 – June 16, 1952), was an American professional umpire in Major League Baseball.
Cusack's brief stint in the National League was marked by an incident in which he was assaulted by an irate player and threatened by several others.
In a May game, Cusack called Cincinnati catcher Frank Roth out on a play at home plate.
Several of Roth's teammates, with baseball bats in hand, crowded around Cusack and made threats toward the umpire.
[6] Cusack died in his hometown of Chicago at the age of 75, and is interred at Holy Sepulchre Catholic Cemetery in Worth, Illinois.