Cornelius McGillicuddy, better known as Connie Mack, was an American professional baseball catcher, manager, and team owner. The longest-serving manager in Major League Baseball history, he holds records for wins (3,731), losses (3,948), and games managed (7,755). Mack's victory total is 829 more than the second highest total, 2,902 wins by Tony La Russa. Mack's lead in career losses is even greater, 1,433 higher than the second highest total, La Russa's 2,515.

Catcher is a position in baseball and softball. When a batter takes their turn to hit, the catcher crouches behind home plate, in front of the (home) umpire, and receives the ball from the pitcher. In addition to this primary duty, the catcher is also called upon to master many other skills in order to field the position well. The role of the catcher is similar to that of the wicket-keeper in cricket.