Basketball

Basketball is a sport that is played on Safehold, especially in the Old Kingdom of Charis. It is quite similar to the sport played on Old Earth. Along with Baseball, it is a favourite sport of Prince Daivyn Daykyn, which he often played with Haarahld Breygart and Prince Zhan. (MTAT)

Trivia
Nimue Alban once referred to the TFNS Romulus' entire data core consisting of only three spheres of molecular circuitry, none larger than an Old Earth basketball. (OAR)