Bernard Mensah scored a brace and Vincent Aboubakar grabbed a goal as Besiktas hammered Fatih Karagumruk 4-1 in a Turkish Super Lig match on Thursday.
The away win stretched the Black Eagles' unbeaten run to eight league matches and it extended their lead at the summit of the league table, three points clear of second-placed Fenerbahce.
Aboubakar broke the deadlock at the Ataturk Olympic Stadium a minute before half-time with his 10th league goal of the season after benefitting from Georges N'Koudou's assist.
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The Cameroon forward is the second African top scorer in the Turkish top-flight after Gabon's Aaron Boupendza who leads the Super Lig scorers' chart with 13 goals for Hatayspor.