The Super Eagles' AFCON 2027 hopes face a decisive Tuesday, when Nigeria play Tanzania three hours before leaders Guinea-Bissau host Madagascar, with the only qualifying place in Group L still open.
Friday's 3-1 win over Tanzania in Uyo lifted Nigeria to six points from three games, one behind Guinea-Bissau, who were held 1-1 by Madagascar on Thursday. Madagascar have two points and Tanzania one.
Tanzania's position at the bottom does not matter to them. As one of the three co-hosts, with Kenya and Uganda, they qualified automatically, and CAF's rules for groups with a host nation mean only the highest-placed team other than the host goes through.
The Tuesday timetable
Nigeria play first. The return leg against Tanzania kicks off at 14:00 WAT (13:00 GMT) on Tuesday 17 November, and Guinea-Bissau host Madagascar at 17:00 WAT (16:00 GMT) the same day.
That order means Guinea-Bissau will know Nigeria's result before they kick off. Matchdays 5 and 6 follow in March 2027, which leaves Nigeria with one game each against Madagascar and Guinea-Bissau after Tuesday.
Analysis: What each result would mean
A Nigeria win takes them to nine points and top of the group for at least three hours. Guinea-Bissau would then need to beat Madagascar to go back above them, on ten points.
That is the best case for the Super Eagles going into March: a one-point gap at worst, with the group decided by the last two rounds. A draw in Tanzania would leave Nigeria on seven, and a Guinea-Bissau win would open a three-point gap, a big margin with only six points left to play for.
Defeat would be far worse. Six points with two games left, against a leader who could be on ten, would leave Nigeria needing to win both March games and hope.
The first meeting adds edge. Nigeria lost 3-0 to Guinea-Bissau, so the return game in March is their one chance to put that right.
Madagascar are not out of it either. Their draw on Thursday cost Guinea-Bissau two points, and another result against the leaders on Tuesday would hand Nigeria a real opening.
All of which explains why Eric Chelle played down the Uyo win, and why the draw in Antananarivo mattered so much to Nigeria.
The fixture list has handed the Super Eagles the first move on Tuesday. Win in Tanzania, and the pressure shifts to Guinea-Bissau.