Tunisia and Burkina Faso are in the last eight of the AFCON after victory against Nigeria and Gabon respectively .
Tunisia Youssef Msakni beat Super Eagles keeper Maduka Okoye with a long-range effort two minutes into the second half.
Nigeria’s work was made harder when Alex Iwobi was sent off following a video assistant referee review.
Super eagles loss came as a surprise to many having won all their group games.
Tunisia on the other hand won only one match in the group stage and qualified as the third best in group F.
Burkina Faso won 7-6 on penalties after a 1-1 draw after extra time. Tunisia will face Burkina Faso in the last eight on Saturday, 29 January.