Jaroslav Žemla played only singles at the 1906 Athina Olympics, losing in the second round after defeating Hungary’s Károly Vitus in round one. There were three Žemlas who played tennis at the 1906 Games – Zdeněk, Ladislav, and Jaroslav – with all competing for I. Český Lawn-Tenisový Klub Praha. Ladislav and Zdeněk played together to win the doubles bronze medal. We suspect they are related, possibly brothers, but have not yet been able to confirm that. Ladislav was the best known tennis player of the group, competing again at the 1908 and 1912 Olympics, and winning several other events in Hungary in that era.