The only goal of the match was scored by Crespo, in the 78th minute.
On the same afternoon, Sagrada Esperança drew 0-0 against Santa Rita de Cássia, in a delayed game for the second round.
Recreativo do Libolo, in turn, beat Isaac de Benguela 2-1, with goals from Abdul and Ramiro, while the opponent reduced it through Didi, in an early game of round six.
Kaporal (Wiliete de Benguela) leads Girabola's top scorers, with eight goals.
Classification:
1. Petro de Luanda, 12 points
2. 1.º de Agosto, 11
3. Recreativo do Libolo, 11
4. Williete de Benguela, 10
5. Académica do Lobito, 8
6. Interclube, 8
7. Bravos do Maquis, 7
8. Sagrada Esperança, 6
9. Carmona FC, 5
10. Kabuscorp do Palanca, 5
11. Santa Rita de Cássia, 5
12. São Salvador do Zaire, 4
13. Desportivo da Lunda Sul, 4
14. Isaac de Benguela, 2
15. Luanda City, 1
16. Desportivo da Huila, 1
