Ivory Coast pulled off an astonishing extra-time comeback win despite being a man down as they beat Mali 2-1 on Saturday evening.
The hosts needed a penalty shootout to get past Senegal in their first-round knockout match, while Mali beat Burkina Faso 2-1.
The first half was marked by chaos as Sikou Niakate had a penalty appeal for handball turned down as he was offside, before Odilon Kossouna conceded one for a foul on Lassine Sinayoko, only for Adama Traore to miss.
Just before half-time, Sinayoko brought another desperate foul from the Kossouno, who saw red.
As the weakened side tired, Nene found room to fire in a brilliant strike from 30 yards out to take the lead, but with the game almost over, Simon Adingra prodded home an injury-time equaliser.
With no breakthrough in extra time, the match seemed to be set for penalties before a knockout blow from Oumar Diakite in extra-time added time.