The final group-stage match between Guinea-Bissau and Nigeria is currently underway at the Felix Houphouet Boigny Stadium in the ongoing Afcon games in Ivory Coast.
Nigeria took an early lead in the 34th minute through an own goal after Opa Sangate smashed the ball into his own net from inside the box from a cross delivered from the left flung.
The score line remained the same going into the break with possession in Guinea-Bissau's favour at 51 per cent against 49 per cent for Nigeria.
If nothing changes after full-time, Nigeria will remain second in Group A with seven points same as Equatorial Guinea with a superior goal difference.
Equatorial Guinea were leading hosts Ivory Coast 1-0 by halftime in the final group stage game.
Nigeria need only a point in the game to safely sail through to the last-16.
Defeat would not necessarily send them packing as the four points would be enough to progress as one of the best third-placed teams.
Guinea-Bissau lie bottom of Group A with no point having lost two of its opening matches to Ivory Coast and Equatorial Guinea.
