Fenerbahce suffered a 1-0 defeat away to Alanyaspor at the Bahçeşehir Okulları Stadium on Sunday in the Super Lig.
Efecan Karaca scored the winning goal on 57 minutes to inflict more pain on the Yellow Canaries who are currently experiencing one of their worst seasons in recent memory.
The Yellow-Navy Blues have lost eight away games in the league this term and have won just a single game on the road.
The defeat saw Fenerbahce end the week in 14th place on 33 points after 29 games. Just five-points separate the Yellow Canaries with the relegation zone.
Fenerbahce take on rivals Trabzonspor next at the Sukru Saracoglu stadium.
Alanyaspor 1-0 Fenerbahce
Stadium: Bahçeşehir Okulları
Referee: Suat Arslanboğa, Serkan Ok, İsmail Şencan
Aytemiz Alanyaspor: Haydar Yılmaz, Baiano, Caulker, Welinton, Nsakala, Sackey, Ozan Tufan, Efecan Karaca (min. 90+4 Hasan Ayaroğlu), Villafanez (min. 90+1 Taha Yalçıner), Campos (min. 90+2 Junior Fernandes), Cisse
Fenerbahçe: Harun Tekin, Isla, Skrtel, Serdar Aziz (min. 46 Sadık Çiftpınar), İsmail Köybaşı (min. 60 Frey), Mehmet Topal, Tolgay Arslan (min. 69 Zajc), Dirar, Eljif Elmas, Valbuena, Ayew
Goal: min. 57 Efecan Karaca (Aytemiz Alanyaspor)