The Winning Team (1952)

In 1908 Nebraska, young Grover Cleveland "Alex" Alexander (Ronald Reagan) saves to buy a farm for himself and his fiancée, Aimee (Doris Day), but also longs to realize his dream of playing baseball. His pitching skills win him a position on an Illinois team, but an injury almost ruins his chance. Once he recovers, he and Aimee wed, and he returns to baseball and begins an increasingly successful career -- until he's diagnosed with epilepsy, which he struggles to hide from the public and Aimee.