All league phase matches are played in accordance with the league system, whereby each club plays six opponents in single-leg ties. Each club plays three home and three away matches.
In principle, a club does not play more than two home or two away matches in a row. The UEFA administration may derogate from these rules if necessary.
All 36 clubs are ranked in a single league ranking according to their results (3 points for a win, 1 point for a draw, 0 points for a loss).
The teams ranked 1 to 22 at the end of league phase qualify for the round of 32. The teams in position 23 to 36 are eliminated.