The Fear Fighter (1925)

Billy Griffin, who is in love with Catherine Curtis, the daughter of fight promoter James Curtis, must fight her father in order to win her hand in marriage. Despite his ignorance of boxing, Billy puts on the gloves, and the elder Curtis knocks him senseless. When Billy awakens, he has lost his memory. Billy is later sentenced to 90 days in jail, where his cellmate, a former boxer, sees he has a natural punch and teaches him the fistic art. After his release, Billy becomes a boxer and is soon successful enough to be matched with the light heavyweight champion, Young Dillon. Suddenly, Billy regains his memory and remembers nothing of his days as a fighter. He enters the ring with the champ, and for several rounds he is badly beaten. However, Catherine taunts Billy, calling him "yellow" until he becomes greatly angered. He handily wins the fight, but refuses to speak to Catherine. After learning she was only using his anger to save him, Billy chases after her taxi cab and, after leaping on the roof of the speeding vehicle, wins her for his bride.