League Leader

League Leader, manufactured by Success Manufacturing Corporation in March 1941, is a single-player, flipperless electro-mechanical machine with a baseball theme.

Gameplay is built around 11 passive bumpers; as a flipperless design, it relies on the ball's own momentum and placement rather than flipper control, typical of pre-flipper-era EM machines. Contemporary advertising implies a replay mechanism capable of recording over 75 replays, though documentation confirming the exact mechanism has not been found.

Little is known about League Leader's designer or artwork. As a pre-war baseball-themed EM machine from a short-lived manufacturer (Success Manufacturing operated only from 1940-1942), it represents a specific and relatively obscure slice of early pinball history.