The game had initially been abandoned a few weeks ago due to heavy snow and looked destined to be cancelled again when referee Baris Simsek postponed the start due to heavy fog.
Simsek did eventually give the go ahead for the match to start. The Istanbul giants look destined to drop points going into the last 20 minutes of the game until Jose Sosa scored a sensational free-kick goal on 74 minutes.
Besiktas still have another game in hand over Fenerbahce against Super Lig giants Trabzonspor.
BEŞİKTAŞ 1 – 0 MERSİN İDMANYURDU
Stadium: Başakşehir Fatih Terim
Referee: Barış Şimşek, Uygar Bebek, Mehmet Metin
Besiktas: Tolga Zengin, Beck, Necip Uysal, Tosic, İsmail Köybaşı, Hutchinson, Oğuzhan Özyakup, Quaresma, Sosa (min. 90+2 Veli Kavlak), Gökhan Töre (min. 46 Cenk Tosun), Gomez (min. 64 Olcay Şahan)
Manager: Senol Gunes
Mersin: Muammer Zülfikar Yıldırım, Serkan Balcı, Mitrovic (min. 87 Mehmet Enes Sığırcı), Serol Demirhan, Gökçek Vederson, Güven Varol, Mehmet Taş, Murat Ceylan (79 Sinan Kaloğlu), Tita, Eren Tozlu (min. 46 Pedriel), Nakoulma
Goals: min. 74 Sosa (Beşiktaş)
Yellow Cards: min. 58 Tosic, min. 59 Necip Uysal (Beşiktaş), min. 69 Mitrovic, min. 72 Pedriel (Mersin İdmanyurdu)