He raised kane (1922)

Kane, who does not want his father to know he is a fighter, thinking he objects, nearly loses the fight when he sees him at the ringside. In the end, it is the words of encouragement from his father which causes him to win. It develops that the "Kid's" father has known it all the time and has been getting reports on his son's prowess in the ring. Eighth episode in the first 'Leather Pushers' series of two-reel boxing shorts.