 Nyora kupfuurira kweiyi ndima - Muna 1920, kuitira kuti iwedzere, Football League yakatora zvikwata kubva kuChikamu Chekutanga cheSouthern League. Swansea yakaiswa mu Football League Third Division ichangobva kuumbwa asi Cardiff yakapihwa nzvimbo muFootball League Second Division mushure mekukunda sarudzo yesarudzo. Kupatsanurwa kwakatungamira kumativi maviri akatarisana katatu chete pakati pa1920 na1929, ese akauya muWales Cup. Cardiff yakafarikanya imwe yenguva dzakabudirira kwazvo munhoroondo yekirabhu mukati memakore ekuma1920, ichikunda 1927 FA Cup Finaluye vachipedza vari runners-up muzvose 1925 yokupedzisira uye First Division muna 192324. Mumakore ekuma1920 makwikwi aya akanga ane ushamwari; kune nhoroondo dzevateveri veSwansea vaienda kumakwikwi ekupedzisira e1927 FA Cup vachitsigira vavengi vavo vavakidzani. Mashoko omutsa akatumirwawo kuchikwata cheCardiff chakabva kuSwansea mutambo usati watanga. 