Malawi had never played a match at the Women’s Africa Cup of Nations before Tuesday night. They finished their first one 3–2 ahead of Nigeria, the defending champions and the most decorated side in the competition’s history, in front of a crowd in Rabat that had come to watch a formality.

It was not close for most of it and then it was frantic. Malawi were level until the 73rd minute, when Temwa Chawinga scored; her sister Tabitha made it two six minutes later. Nigeria pulled one back through Rasheedat Ajibade from the penalty spot in the second minute of stoppage time, Temwa Chawinga restored the two-goal lead three minutes after that, and Nigeria’s second, from Kanu, arrived in the ninth minute of added time with nothing left to do. Five of the match’s goals came in the last eighteen minutes and three of them after the ninety.

The scale of it is easier to see in Nigeria’s record than in the scoreline. CAF recognises fourteen editions of the tournament as full competitions — the 1991 and 1995 events were run purely as World Cup qualifiers and are counted separately — and Nigeria have won ten of the fourteen and appeared in all of them since 1998. Malawi are in the field at all because CAF expanded the tournament from twelve teams to sixteen after qualifying had already finished. Both of the debutants that expansion admitted played on the opening matchday and split the result between them: Malawi beat the champions, and Cape Verde lost 2–0 to Ghana.

Nigeria were not the only established side to lose. South Africa, runners-up in Group B’s reckoning before a ball was kicked, went down 2–1 to Tanzania on Monday, Aisha Msewa scoring in the 37th minute and Ubamba settling it in the 87th after Bambanani Mbane had equalised on the stroke of half-time. The scoring elsewhere has been heavy rather than close: Zambia beat Egypt 6–0 with four goals from Barbra Banda, Ivory Coast beat Burkina Faso 4–1, Morocco opened the tournament by beating Kenya 4–0, and Algeria and Ghana won 2–0. The eighth and last match of the round ended Cameroon 2–1 Mali, both goals from Ngah Manga, which closes the opening round on 30 goals in eight matches — 3.75 a game.

What those results are actually contesting is not obvious from the group tables, because this tournament is also the African qualifying competition for the 2027 World Cup in Brazil, and the qualification is not awarded the way the trophy is. CAF’s published fixture list sets out the mechanics plainly. The four quarter-finals are played on 8 and 9 August, pairing the winner of Group A with the runner-up of Group B, B’s winner with A’s runner-up, C’s winner with D’s runner-up and D’s winner with C’s runner-up. The four winners of those matches qualify for the World Cup directly.

The four losers do not go home. On 13 August they play a second bracket of their own — the loser of the first quarter-final against the loser of the fourth, the loser of the second against the loser of the third — and the two winners take Africa’s places in the inter-confederation play-offs, the last route into the tournament. The semi-finals on 12 August, the third-place match on the 15th and the final on the 16th decide the continental title and nothing about Brazil.

That inverts the usual shape of a tournament. Every team still in the competition on 8 August is two hours away from either qualifying for a World Cup or dropping into a play-off bracket, and the games that follow, including the final, are played by sides that already know. It also means the group stage carries an unusual weight for second-placed teams: finishing runner-up in Group A sends you into a quarter-final against the winner of Group B, and finishing runner-up in Group B sends you against the winner of Group A, so which group a team finishes second in determines who stands between it and Brazil.

For Nigeria the immediate arithmetic is unchanged by the defeat — three group matches remain, they play Zambia on 1 August and Egypt on the 5th, and second place in Group C would still put them in a quarter-final. But the margin is gone. Malawi and Zambia both have three points and a positive goal difference; Nigeria have none and a negative one, and they have already used up the fixture that was supposed to be straightforward.