Algeria, the Defending Champion of the Africa Cup of Nations (AFCON), were stunned by Equatorial Guinea during their second group game recently.
The defeat puts Algeria are on the brink of missing elimination from the first round of the tournament as the country also failed to win their first game of the tournament.
The Defending Champions have just one point from two matches and need to beat Ivory Coast in their final Group E game to have a chance of progressing to the next round.
Esteban Obiang sealed the victory for Equatorial Guinea in the 70th minute when he slid in at the far post to connect to a flick-on in Douala.
In the final round of games in the group, Equatorial Guinea will face the Leone Stars of Sierra Leone in Limbe while Algeria will face group leaders Ivory Coast in Douala at the same time.