Riders Up (1924)

Johnny, a racetrack tout in Tijuana, Mexico, is unsuccessful in his gambling but leads his New England family to believe he is engaged in legitimate business. He finally wins on a long shot and intends to return home, though he dislikes leaving his sweetheart, Norah Ryan. As a parting gesture Johnny takes his blind, elderly friend Jeff to the track, tells him his favorite horse has won, then gives Jeff his own winnings when he learns that the old man has staked all of his savings. The kindly intervention of Norah's mother enables Johnny to go home with Norah as his wife.