Lig for sponsorship reasons,[1] is the second level of the Turkish football league system.

[2][3] In April 2012 Bank Asya withdrew as sponsor of the league.

[4] During the 2012–2016 seasons the league was known under the terms of a sponsorship deal as the PTT 1.

In 2010–11 play-off status changed again and elimination match system came back but this time on a two-leg (home and away) basis.

In the next round, the qualified teams will compete in a two-legged format to advance to the final.