Rivers United on Sunday defeated hosts DC Motema Pembe of Angola 1-0 in a Match Day 3 tie of the CAF Confederation Cup.
The away match result puts Rivers United of Port Harcourt on top group B with six points in three matches.
The game was played at the Estádio 11 de Novembro stadium in Talatona, Angola.
The Nigeria Professional Football League side made efforts to open scoring early in the game, but were thwarted by the solid defence of their opponents.
The team, however, suffered the exit of Ebube Duru, who was shown a red card after a second bookable offence in the 42nd minute.
It was not until the 52nd minute of the game that Paul Acquah slotted in the match winner off a rebound, gifting the visitors the maximum points in the game.
The Nigerian team will host the Angola side for a return leg on March 8 at the Godswill Akpabio Stadium, Uyo, Akwa Ibom State.