dᵻspˈaɪt ðə klˈʌbz pɹˈuːvnəns, ɪts fˈɜːst ɐpˈɪɹəns ɪn lˈʌksəmbˌɜːɡz lˈiːɡ æz ɹˈɛd bˈɔɪz dˈɪfɚdˌændʒ kˈeɪm ˈoʊnli ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪntiːn ænd, ðˈɛn, ˈoʊnli ɪnðə sˈɛkənd dᵻvˈɪʒən.
Despite the clubs provenance, its first appearance in Luxembourg's league as Red Boys Differdange came only in 1919 (and, then, only in the second division).