Tunisia upset 10-man Nigeria to set up a quarter-final tie against Burkina Faso at the Africa Cup of Nations.
Youssef Msakni beat Super Eagles keeper Maduka Okoye with a long-range effort two minutes into the second half.
Nigeria’s task was made harder when Alex Iwobi was sent off following a video assistant referee review.
The West Africans were the only side to win all three group games in Cameroon, but were largely subdued against a Tunisia side hit by Covid-19.
Tunisia, Nations Cup winners in 2004, will face Burkina Faso in the last eight on Saturday, 29 January.
Burkina Faso beat 10-man Gabon on penalties to reach the quarter-finals at the Africa Cup of Nations in Cameroon following a 1-1 draw.