In a post-war purple patch, Rhyl won the league title twice – in 1947–48 and 1950–51 – and the Welsh Cup twice in succession. In 1952, they beat Merthyr Tydfil 4–3 and became the first non-league side in the modern era to retain the trophy, by defeating Chester City 2–1 the following season. Rhyl had been losing finalists to Cardiff City in 1930 and Crewe Alexandra in 1937, but did not feature in the final again until 1993, when they lost 5–0 to Cardiff City. Between 1948 and 1972 Rhyl appeared regularly in the first round proper of the FA Cup. In 1957 Rhyl reached the fourth round proper, beating Notts County 3–1 away before losing 3–0 away to Bristol City; in 1971 they eliminated Hartlepool United and Barnsley before elimination by compatriots Swansea City.