For the first time this season there will be an all-Tunisian clash in Africa's elite club competition, with two-time winners Tunis going into Sunday's game as underdogs after losing their opening two Group B encounters.
In stark contrast, Sfaxien - who finished as runners-up to Tunis in the Tunisian Ligue 1 last season - lead the way with four points from two games. However, Tunis have won three of their last four league matches with Sfaxien, but this will be their first continental meeting.
Al Ahli will have to work out a plan to stop El Hedi Belameiri if they are to take at least a share of the points on Saturday, the Algerian forward has struck in both group games so far and has netted in each of his five outings in the competition in 2014.
Zamalek travel to Lubumbashi on Sunday hoping to inflict a first home defeat in the competition on TP Mazembe, themselves four-time winners, since October 2009.
Meanwhile, Al Hilal Omdurman entertain V.Club in what will be the first time the teams have played each other.
