The Super Eagles of Nigeria beat Guinea-Bissau 2-0 to become the only side at the Africa Cup of Nations to win all three group games.
Despite making eight changes to the side that defeat Sudan and Egypt, the Super Eagles gave good account of themselves.
After a goalless first half, Umar Sadiq opened the scoring shortly after the break following a cross from Kelechi Iheanacho.
21 minutes later, standing captain William Troost-Ekong scored the second goal to effectively put off any hope of a comeback by their opponents.
In the group’s other match, Egypt defeated Sudan by a lone goal to qualify for the round of 16.