Most of the matches ended in wins for the home team
DR Congo club DC Motema Pembe were beaten 2-1 at home by Gabon's Mangasport in the biggest surprise of the Champions League first round, first leg fixtures.
Cameroon's Canon Yaounde were held 1-1 at home by Inter Star of Burundi, but elswhere, home advantage was decisive.
Zimbabwean debutants Monomotapa made a winning start in African football with a 2-0 win over Zanzibar's Miembeni in Harare on Sunday, with Brian Mapfumo scoring both goals.
Nigeria's Heartland were comprehensive 4-0 winners against Black Star of Liberia in Owerri.
South African side SuperSport United beat Curepipe Starlight of Mauritius 3-0 in Pretoria, with Brent Carelse converting two penalties.
On Saturday, Young Africans of Tanzania demolished Etoile d'Or Mirontsy of Comoros 8-1.
Kenyan striker Boniface Ambani scored four times as Yanga eased to the first-leg victory in Dar-es-Salam.
Jerry Tegete grabbed a brace with the other goals for the home side coming from Wisdom Ndlovu and Mrisho Ngassa.
The visitors scored their consolation through striker Abubakar Alisouf.
Elsewhere on Saturday, Nigerian club Kano Pillars defeated Elect Sport of Chad 2-0.
Second-half goals from Ogaga and Namo helped the northern club to secure their win.
Kenyan champions Mathare United travelled to Zambia where they were beaten 2-0 by ZESCO United.
FAR Rabat of Morocco took on the team which knocked them out last year, Cape Verde's Sporting Praia and will be confident of making it through this time after a 6-1 victory.
Angola's Primeiro Agosto had a 5-2 victory over Renaissance Aiglons of Congo-Brazzaville and there were also victories for AS Douanes of Senegal, Sudan's El Merreikh, Etoile Filante of Burkina Faso and Libya's Al Ahly Tripoli.
Meanwhile on Friday, Mohamed Messaoud's first half strike helped Algerian club ASO Chlef to a 1-0 beat Fello Star of Guinea 1-0 in Chlef.
The second leg matches will be played in two weeks' time.
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