The Kid Who Only Hit Homers (1972) is a children's novel about baseball written by American author Matt Christopher.
[1][2] It was the first in a series of four novels featuring a young man (Sylvester Coddmeyer III) who is trained to play baseball by supernatural visitations from former Major League players.
Sylvester loved baseball, but he wasn't what you'd call a good hitter.
He had decided against joining the team when he met George Baruth.
When his friend "Snooky" tries to convince him this mysterious man was just a figment of his imagination, Sylvester tries to prove to him the truth.