Nigeria’s U-23 team started their quest to participate in next year’s summer Olympic Games with a 0-1 loss to their Ivorian counterpart.
Silas Gnaka converted a 71st minute penalty after Olisah Harold Ndah was sent out.
Nigeria will have to win their next two matches against Zambia and South Africa to entertain any hope to progress in the competition.
In other results, Egypt defeated Mali by a lone goal while Cameroon and Ghana settled their encounter 1-1.