BBC Sport, Oleh
Perpetua Nkwocha was in good form for the Falcons
Nigeria beat South Africa 2-0 on Friday in the African Women's Championship to top Group A.
A Cynthia Uwak brace secured the top spot for the Super Falcons ahead of the South Africans.
Stella Mbachu was a thorn in the flesh of Bayana Bayana as her pace unsettled the 2004 hosts.
Mbachu broke free from the right and her brilliant low pass was tapped in by Uwak in the fourth minute.
South Africa fought back bravely but Nigerian midfielders Perpetua Nkwocha and Effiomwan Ekpo were firm.
Nyanden Nompumelelo thought she drew her side level in the 31st minute, but her header off a Portia Modise cross was ruled out by Togolese referee Agboye Xonam.
Nompumelelo was flagged because she was offside when the move began.
Two minutes before the break, Uwak profited from a Perpetua Nkwocha pass before beating Molale Bridgette in goal for South Africa.
Both sides fought positively in the second half but Portia Modise and Veronica Phewa missed good scoring chances for Bayana Bayana.
"We showed Nigeria too much respect and we paid dearly for it," South Africa coach Augustine Makalakalane said.
South Africa will now face the winners of Group B in the semi finals on Tuesday with the Nigerians taking on the runners-up.
Meanwhile, Algeria and Equatorial Guinea settled for a thrilling 3-3 draw in Oghara to grab their first points of the competition.
The two sides lost their two opening games to Nigeria and South Africa.
Anonam Nze Genoveva scored Equatorial Guinea's first goal in the first minute to stun the north Africans.
But the Algerians rallied and drew level in the 38th through Doumar Lilia.
A brace each from Algerian Bouani Benziane and Guinean Essiane Coltide ended the game in an entertaining fashion.