Although the first national championship in Switzerland took place in 1897–98 it is considered as unofficial because it was not organized by the Swiss Football Association (SFA; founded in 1895).

The RTV/Realschüler-Turnverein (real school student gymnastics club) had a football team from 1893 to 1898 from which the FC Old Boys emerged in 1894.

The friendly match against FC Bern was played on neutral ground in Aarau and Basel won this game 4–1.

[3] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Win Draw Loss (NB: Despite all efforts, the editors of these books and the authors in "Basler Fussballarchiv" have failed to be able to identify all the players, their date and place of birth or date and place of death, who played in the games during the early years of FC Basel.)