Sunshine Stars of Nigeria defeated Motema Pembe 2-0 as they made their debut in the group phase of the Confederation Cup.
Asec Mimosas of Ivory Coast and Club Africain of Tunisia played out to a 1-1 draw in Abidjan in Sunday's only game.
Moghreb Fes of Morocco a 1-0 home success over Algerian visitors JS Kabylie on Saturday.
Nigerian side Kaduna United could only manage a 1-1 home draw against InterClube also on Saturday.
Sunshine got a perfect start in their group phase campaign as Dayo Ojo put them in the lead midway through the second-half in the game against the DR Congo side.
Ajani Ibrahim doubled their advantage by adding a late goal to seal the victory in Ijebu Ode.
But their compatriots Kaduna United could not achieve a similar feat as they were held by InterClube.
Kaduna United appeared on track for maximum points when Ali Adamu gave them a second-half lead in the northern city.
But recent signing Patrick Lembo equalised in stoppage time to earn the Angolan police team the vital away draw.
Chemseddine Chetaibi struck five minutes from full-time to give Moghreb Fes their win over JS Kabylie, one of three former African champions among the eight contenders.
The other two - Asec and Club Africain - played out to a 1-1 draw to complete the opening-round fixtures in the second-tier African club championship.
The result leaves Group A evenly poised as all the four teams have one point each.
Sunshine lead Moghreb on goal difference in Group B after they secured three points each.
A defence marshalled by captain Godfrey Aboabona kept 1994 African Cup Winners' Cup winners Motema Pembe in check while Ukeyima Akombo and Ibrahim constantly threatened to break the deadlock at the other end.
Dele Olundare replaced Sakibu Atanda at half-time and he applied additional pressure to a Pembe defence that cracked on 69 minutes when a 25-yard Ojo drive found the net.
Goalkeeper Sunday Ocheje thwarted several attempts by the Kinshasa club to level before Ibrahim sealed the outcome on 90 minutes when he punished a defensive blunder by heading home.
Belgium-born coach Maurice Cooreman is standing by his pre-match boast that Kaduna will become the first Nigerian winners of the competition despite dropping two points at the Township Stadium.
"I have a young team and inexperience let us down in the closing stages, but I still believe Kaduna are good enough to lift the trophy," he told reporters as preparations began for an end-of-month visit to Club Africain.
Kabylie had midfielder Billel Naili sent off 10 minutes into the second half in Fes and were undone when Chetaibi scored his first goal in the competition this season with a perfectly placed header.