> Before achieving fame as a leading literary voice of the Beat Generation, Jack Kerouac aspired to be a sportswriter and already as a teenager had created a highly detailed imaginary baseball universe.

https://sabr.org/journal/article/jack-kerouac-the-beat-of-fantasy-baseball/

Kerouac ("En la carretera", icono de la literatura "beat") creo su propio universo exactamente a los 15, el mismo año en el que Tolkien publicó El Hóbbit. Pero el suyo era de... béisbol.