I Liga is the second-highest football division in Poland built by 18 clubs. For one season each club plays two matches against every other member for a total of 34 matches. Each club play one time as host and one time as guest. Clubs are ranked in table according to points they won, goal difference and goals scored. At the end of the season top 2 clubs are promoted to highest football division named Ekstraklasa. Last three clubs in I Liga are automatically demoted to lower II Liga, while the forth-last team is playing a play-off round with 4th team from II Liga to determine which one will play in I Liga for the next season.