Fenerbahçe beat Kasımpaşa 2-0 in a Trendyol Super Lig match on Sunday to equal their best season start record.
Bosnian forward Edin Dzeko scored an early opener for Fenerbahçe.
Dzeko was brought down in the area as Fenerbahçe were awarded a penalty kick near the end of the first half.
Serbian midfielder Dusan Tadic scored from the white spot to double the lead for Fenerbahçe.
The Dzeko-led Fenerbahçe has won eight matches in a row to top the Super Lig standings with 24 points, repeating their best season start in the 2009-2010 season.
In their next fixture, Fenerbahçe will host Atakaş Hatayspor in Istanbul on Oct. 22 after the international break.
Defending champions Galatasaray are second with 22 points to challenge Fenerbahçe.
Galatasaray will next face Beşiktaş in a home derby on Oct. 21.
Adana Demirspor, a club from Türkiye's south, are third with 17 points in eight matches.
Beşiktaş, who beat Istanbulspor 2-0 at home on Sunday, are in fourth position with 16 points.