R. Charleroi S.C. after their foundation, they qualified to play in the Promotion (then the second level in Belgian football) and in 1929, the club changed its name to Royal Charleroi Sporting Club. Rivals from Olympic Charleroi were playing in the first division in the late 1930s and the 1940s, while Sporting Charleroi was playing one level down, until they promoted in 1947. In 1949, Sporting Charleroi finished 4th (2 points behind Standard Liège) whereas Olympic Charleroi was 14th. But Olympic took the lead again until 1955 and their relegation to the second division. At the end of the 1956–57 season, Olympic Charleroi
St Mirren F.C. in European football went on to be surprise winners of the tournament in their European début. St Mirren F.C. in European football St Mirren Football Club is a Scottish association football club based in Paisley. The club first competed in a European competition in 1980–81, entering the UEFA Cup following a third-place finish in the Scottish Premier Division. The club reached the second round, which remains the club's joint best run in a UEFA competition. St Mirren secured a third-place finish in the Scottish Premier Division behind Aberdeen and Celtic in the 1979–80 season which qualified the club to enter the first round