This is the league structure currently in operation; comprising 60 teams that are divided geographically in three groups of 20 each. At the end of each season, four teams are promoted to Serie B (three group winners, plus one coming from a promotion playoff involving the three group runners-up). Meanwhile, nine teams are relegated to Serie D: the last-placed team from each group go down directly, whereas teams between 16th and 19th from each group place play a relegation playoff (officially referred to as play-out), with the two losing teams from each group also relegated.