On-loan Galatasaray striker Victor Osimhen failed to find the back of the net as his side lost 2-1 to BeÅŸiktaÅŸ on Saturday.
Osimhen, who was declared fit for the game after representing Nigeria during the international break, started the Turkish league fixture.
Rafa Silva opened the scoring in the 23rd minute of the encounter before Lucas Torreira equalised in the 45th minute.
Gedson Fernandes grabbed the winner for the hosts as Galatasaray suffered their first defeat of the season.
The Nigerian has scored eight goals in his last five league outings for the Yellow and Reds.
Osimhen is currently the leading scorer in the Turkish Süper Lig this season, with 20 goals from 22 matches.
Galatasaray remain top of the table with 71 points from 28 games.
