The
TFF First League (currently known under the terms of a sponsorship deal as the
PTT 1. Lig) is the second level of the
Turkish football league system. The league was founded in 2000 after it was separated from the
Turkish Second League Category B during reorganizing
Second League, who was second level of Turkish league between 1963–2001. It was founded as the
Turkish Second League Category A and started with 20 teams. The number of teams were reduced to 18 the season after, in 2002. The league was renamed
TFF First League prior to the 2007–08 season. It was called Türk Telekom Lig A in 2006–2007 season.