Mania

Young tennis player Diana wins all her games with the help of her father's hypnosis, a former athlete. During another game, Diana faces an opponent Diana is physically unable to do overcome. Hypnosis changes her strength, and Diana loses, while Diana's father does not go on court. Diana accidentally scratches her hand until it bleeds, but because there is no staff doctor nearby, the girl is offered two options: wait for the next break and play, or withdraw from the game and go to the hospital. Diana chooses the first, but during the game she accidentally hits the ball at her father. He is taken to the hospital, but he manages to leave Diana a message, thanks to which she begins to believe in her powers and wins without cheating. - IMDb