ÖSK player to represent Sweden. The club returned to Division 2 in 1940 after cruising through Division 3 undefeated and winning against IF Rune in the play-off. In the following year they finished runners-up in Division 2. In 1946 ÖSK was promoted to Allsvenskan for the first time after defeating Surahammar in the play-off, however the spell in the top flight lasted for one season only as they were relegated in 1947. The club returned to Allsvenskan yet again in 1948, when they were celebrating their 40th anniversary, but like last time the spell was only one year. After yet again defeating Surahammar, this time in the final league game, they returned to Allsvenskan and this time they were there to stay a bit longer after defeating IF Elfsborg with 2–0 in the last game of the season. In 1952 the club made their best season so far and ended up on eighth place, but the following year the club was relegated back to Division 2. In 1958 Orvar Bergmark played for the club and won silver in the 1958 FIFA World Cup that was hosted by Sweden. One of the club's founding members, Karl Graflund, retired after 48 years as chairman and two years as secretary, due to illness. Established in Allsvenskan (1960–1978) Örebro SK returned to Allsvenskan in 1960 after defeating IFK Kristianstad and IFK Luleå in the play-off. The same year the club sold its stadium Eyravallen to the municipality of Örebro. The club won the bronze medal in 1961 after finishing fourth. The derby against rivals Degerfors IF was attended by 20,066 spectators, which still stands as club record. In 1962 the club finished sixth position and Orvar Bergmark left the club to join AS Roma. After finishing eighth both in 1963 and in 1964, sixth in 1965 and seventh in 1966, Örebro SK were an established mid table team but in 1967 they won their second bronze medal. After a good start but a poor following season the team had to settle with the fifth spot in 1968 but in 1969 they were close to win Stora Silvret (eng: big silver, runners-up) but just missed after losing the last game of the season. Instead, they finished fifth yet again in the very tight race for silver. In 1970 the club was close to relegation, but stayed up after defeating the previous year's champions IFK Göteborg