The Racing Strain (1918)

Lucille Cameron, the spirited daughter of a Kentucky colonel, discovers that her father is nearly bankrupt as a result of his dealings with New York horseman and stock promoter Jim De Luce. At a Red Cross benefit at the Cameron estate, which the family is sorely in danger of losing, Lucille meets and falls in love with Lieutenant Gregory Haines, who has been sent home from active duty in France to convalesce. Hoping to retrieve the family fortune, Lucille enters the Cameron filly, Southern Pride, in a horse race. Despite De Luce's plotting, Southern Pride wins the race, and Gregory, who has proved his love for Lucille, wins a wife.