Seven teams will keep alive their hopes of playing at the World Cup in African qualifying's final round of group games, with continental champion Nigeria and Ghana not yet assured of progression.
Also facing nervous last-round matchups are Cameroon, Senegal and Tunisia, while minnows Ethiopia and Republic of Congo are in position to qualify for the final playoffs at the expense of 2010 World Cup host South Africa and African Cup runner-up Burkina Faso respectively.
Top-ranked African team Ivory Coast, Egypt and Algeria have already reached the 10-team playoffs in October and November that will complete the two-year process to decide which five teams from Africa go to Brazil next year.
Malawi, Zambia, Libya, Uganda and Cape Verde Islands hope to overtake some of the other top teams late on.
Ghana and Zambia open the final round of group games on Friday in Group D, the first of a host of winner-take-all games to end the main qualifying stage. Also, Tunisia hosts Cape Verde for the right to qualify from Group B, the Nigerians need a point at home against Malawi in Group F and four-time African champion Cameroon must hold off a challenge from Libya when they meet to decide Group I. Senegal plays closest challenger Uganda in Group J's climax in neutral Marrakech with just a point between them.