Three Men On A Horse
Synopsis
Mild-mannered Erwin Trowbridge, bored with his suburban New Jersey life with his wife and brother-in-law and frustrated by his low-paying job writing greeting card verses, decides to declare his independence by skipping work and spending the day in a local saloon. There he meets two men and a woman who make a living by betting on horse races. When they discover Erwin has an almost supernatural ability to go through a racing form and pick the winners, they persuade him to join them at a New York City hotel and regularly give them tips. Complications arise when Erwin begins to miss his wife and job and his cronies insist he put some money on a horse himself, despite his claim he will lose his power if he places a bet.
https://en.wikipedia.org/wiki/Three_Men_on_a_Horse