2012–13 I liga

The 2012–13 I liga football league will see 18 teams competing for the first two places in the table which give promotion from this Polish second-level league to the Ekstraklasa 2013–14 season, whilst the bottom four teams will face relegation to the II liga. According to the competition rules, all clubs are required to field at least one youth player (born on 1992 or later and trained in Poland) in every game (except for the times when the only youth player on the roster is sent off or unable to continue playing, in which case he can't be substituted by a senior player).

2012–13 I liga

The 2012–13 I liga football league will see 18 teams competing for the first two places in the table which give promotion from this Polish second-level league to the Ekstraklasa 2013–14 season, whilst the bottom four teams will face relegation to the II liga. According to the competition rules, all clubs are required to field at least one youth player (born on 1992 or later and trained in Poland) in every game (except for the times when the only youth player on the roster is sent off or unable to continue playing, in which case he can't be substituted by a senior player).