Nigeria won 2-0 against Chad in their Group G opener in qualification for the 2017 African Nations Cup.
Nigeria were firm favourites for the game but struggled to find a way past their opponents, with goalkeeper Vincent Enyeama needing to be alert to keep the visitors at bay during the first half.
The Super Eagles threatened to break the deadlock in the second half when Aaron Samuel hit the post before Gbolahan Salami eventually put them ahead on 63 minutes with a stunning strike.
Odion Ighalo was then pulled down in the penalty area before stepping up to convert for 2-0, but Nigeria saw Ogenyi Onazi sent off for shoving after the spot kick had been awarded.
- The NFF (@thenff) June 13, 2015
Zambia's campaign got off to a disappointing start as they were held to a 0-0 draw by Guinea Bissau in Group E.
Guinea Bissau -- ranked 155th in FIFA rankings -- were major underdogs for the clash against 68th-ranked Zambia in Ndola.
However, Zambia could not break the deadlock, with goalkeeper Kennedy Mweene missing a late penalty for the 2012 African Nations Cup winners.
In Group M, South Africa were also held to a goalless draw at home against Gambia, a team 91 places below them in FIFA's charts.
English Premier League players Mame Biram Diouf and Sadio Mane scored in the second half to help Senegal control Burundi 3-1 in Group K.
Senegal took the lead on Moussa Konate's penalty in the 15th minute, and although Fiston equalised for Burundi after the break, it was Stoke City's Diouf who put his side back in front, while Southampton's Mane tallied in stoppage time.
El-Arbi Hilal Soudani scored twice as Algeria defeated Seychelles 4-0 at home in Group J.
Islam Slimani opened the scoring and Nabil Bentaleb also found the net in stoppage time.
Mali defeated South Sudan 2-0 in Group C thanks to first-half goal from Modibo Maiga and Salif Coulibaly.
Cape Verde cruised to a 7-1 win over Sao Tome and Principe in Group F to go even on points with Morocco.
Djaniny scored twice, while the hosts also got goals from Nuno Rocha, Garry Mendes Rodrigues, Odair Fortes, Babanco and Julio Tavares.
Zimbabwe saw off Malawi 2-1 away to join Swaziland atop Group L.
Zimbabwe, whose players had refused to travel to Malawi over concerns they would not be paid, agreed to play after Prophetic Healing and Deliverance Ministries leader Walter Magaya said costs would be covered.
Zimbabwe came away with victory over goals from Cuthbert Malajila and Khama Billiat either side of Davi Banda's effort for Malawi.
Group L had seen the biggest shock on Friday when Swaziland beat Guinea 2-1.
Uganda beat Botswana 2-0 at home in their Group D opener in Kampala.
Geoffrey Massa and Brian Umony scored in the 55th and 66th minutes in a dominant performance as Uganda continued their fine run of form on home soil.
Also in Group D, Aristide Bance and Jonathan Zongo scored in the second half to lift Burkina Faso over Comoros 2-0.
In Group B, Angola cruised to a 4-0 victory over Central African Republic.
Gelson scored a brace while Dolly Menga and Gilberto both added their names to the scoresheet via the penalty spot.