Complex sentence: After the 1960 season, the league reverted to the traditional system of playing from autumn to spring which meant that the 1961-62 season, as a transition season, went through three rounds and each of the fourteen clubs absolved 39 games.
Split into simpler sentences: After the 1960 season, the league reverted to the traditional system of playing from autumn to spring. This meant that the 1961-62 season, as a transition season, went through three rounds and each of the fourteen clubs played 39 games.