John H. "Jack" McQuaid was a professional baseball player and umpire

Umpire (baseball)

In baseball, the umpire is the person charged with officiating the game, including beginning and ending the game, enforcing the rules of the game and the grounds, making judgment calls on plays, and handling the disciplinary actions. The term is often shortened to the colloquial form ump...

.

He began his career in baseball as a player in the Northwestern League

Northwestern League

The Northwestern League was a minor league baseball league that operated from 1883–1884, and again from 1886-1887. It was founded by Elias Matter in 1883.-1883-1884:...

, where he played in and .

McQuaid then became an umpire in the American Association

American Association (19th century)

The American Association was a Major League Baseball league that existed for 10 seasons from to . During that time, it challenged the National League for dominance of professional baseball...

 from until . He then moved to the National League

National League

The National League of Professional Baseball Clubs, known simply as the National League , is the older of two leagues constituting Major League Baseball, and the world's oldest extant professional team sports league. Founded on February 2, 1876, to replace the National Association of Professional...

in until . McQuaid umpired 952 career games, 242 of them in the American Association, and 710 of them in the National League.