Nigeria made it three wins from three in 2018 World Cup qualifying with a 4-0 thrashing of African champions Cameroon in Uyo.
Earlier on Friday, Ghana scored in the 85th minute to earn a 1-1 draw against visiting Congo in Group E.
Odion Ighalo, John Mikel Obi, Victor Moses and Kelechi Iheanacho were all on target for Nigeria in their victory.
The win means the Super Eagles top Group B on nine points while Cameroon have just two after three matches.
Zambia and Algeria both have a point each and they play their third match, against one another, on Saturday in Lusaka.
Nigeria took the lead on 29 minutes when Ighalo latched onto a ball over the top from captain John Mikel Obi before drilling home.
Ighalo was then booked for revealing a T-shirt in support of his international colleague Carl Ikeme, who is suffering from leukaemia.
Just before half-time, a corner from Moses was turned in by his former Chelsea team-mate Mikel Obi as he stabbed into the roof of the net from close range.
Moses scored the third in the 55th minute after an exchange of passes with Moses Simon.
The rout for Cameroon, who won the Africa Cup of Nations in February, was completed when Leicester City striker Kelechi Iheanacho stooped to head home a cross from Ogenyi Onazi with 14 minutes left.
Nigeria now lead their group B with nine points. Cameroon have two points. Algeria and Zambia have one point each and play each other tomorrow.
| 2018 World Cup qualifiers for Africa (rounds 3 and 4) | |
|---|---|
| Thursday: | Monday: |
| Uganda 1-0 Egypt (Grp E) | Cameroon v Nigeria (Grp B) |
| Guinea 3-2 Libya (Grp A) | Libya v Guinea (Grp A in Tunisia) |
| Friday: | Tuesday: |
| Ghana 1-1 Congo (Grp E) | Congo v Ghana (Grp E) |
| Nigeria 4-0 Cameroon (Grp B) | South Africa v Cape Verde (Grp D) |
| Cape Verde v South Africa (Grp D) | Ivory Coast v Gabon (Grp C) |
| Morocco v Mali (Grp C) | DR Congo v Tunisia (Grp A) |
| Tunisia v DR Congo (Grp A) | Burkina Faso v Senegal (Grp D) |
| Saturday: | Egypt v Uganda (Grp E) |
| Zambia v Algeria (Grp B) | Mali v Morocco (Grp C) |
| Gabon v Ivory Coast (Grp C) | Algeria v Zambia (Grp B) |
| Senegal v Burkina Faso (Grp D) | |
