Nigeria took a huge step towards reaching the last 16 at the 2023 Africa Cup of Nations with a 1-0 win over hosts Cote d'Ivoire in Group A.
The match's key moment came in the 55th minute after Ousmane Diomande caught Victor Osimhen in the box.
That allowed William Troost-Ekong to blast home from the penalty spot.
Roared on by a raucous crowd, the Ivorians pushed hard for an equaliser but failed to create a clear chance against a solid Super Eagles defence.
Nigeria leapfrog the Elephants to go second in Group A and are behind leaders Equatorial Guinea, who beat Guinea-Bissau 4-2 earlier on Thursday, on head-to-head record.
The Ivorians have three points after two games and will now need to beat Equatorial Guinea on Monday (17:00 GMT) to guarantee progress to the knockout stage.
Nigeria - whose four points could already be enough to see the three-time winners through - face Guinea-Bissau (17:00 GMT) in their final Group A fixture.