"The Slump" is written by John Updike. It is a self-narrative story of a professional ballplayer. One day he finds himself unable to hit the ball as good as he used to before.
It is a monologue. A monologue "is a speech given by a single character." And in "The Slump" the narrator gives a monologue about his slump to an unidentified audience.
Most likely teachers because they can talk to the principal about it. Also, it would be helpful to talk to parents so they can tell their kids and talk to other people about it.
