Cameroon's Coton Sport kept their African Champions League hopes alive with 2-0 win over visiting Al Hilal of Sudan on Sunday.
Jacques Haman opened the scoring for the 2008 runners-up after 28 minutes and Brice Zimbori made sure of the three points just after half-time.
In the other Group A game on Friday Nigeria's Enyimba battled to a goalless draw with hosts Raja Casablanca in Morocco.
The results mean that two-time champions Enyimba top the group with eight points from their four games.
Hilal remain in second place, a point behind, while Coton Sport move up to third on four points.
Raja prop up the group with two points and will need to win their last two games if they are to have any chance at all of advancing.
The next Group A games see Enyimba travel to face Al Hilal while Coton Sport host Raja.
The top two sides in Group B Esperance and Wydad Casablanca of Morocco were also locked in a 0-0 stalemate in Tunisia on Saturday.
Wydad stay top of the group but only on goal difference ahead of Esperance - both sides have six points from four games.
Trailing behind with five points are Egypt's Al Ahly who had a chance to go top of the group but could only draw 0-0 with Mouloudia Alger in Algiers late on Sunday.
The Algerians, who now have two points, had the best chance of a lacklustre game just after the half-hour when Burkinabe forward Herve Oussale's shot was blocked by Ahly keeper Ahmed Adel.