Holders Senegal remain team to beat as Africa Cup of Nations moves into knock-out phase

The tournament is on course to be far more prolific than either of the two previous editions to feature 24 teams, after 89 goals were scored in the group stage.

That average of 2.5 per game marks a huge increase after 68 were scored in the first round in Cameroon two years ago, and in the first expanded AFCON in Egypt in 2019.

Senegal got to the final of both of those tournaments, and won the title for the first time in 2022.

They have so far lived up to their billing in Ivory Coast, with Aliou Cisse's side alone in finishing the group stage with a 100 percent record.

Led by Sadio Mane, they swept aside Gambia, Cameroon and Guinea and can be confident going into a last-16 tie with the Ivorians in Yamoussoukro.

Meanwhile Morocco, the continent's top-ranked team, eased through with seven points and the sense is there must be more to come from a side led by Paris Saint-Germain full-back Achraf Hakimi, as they face South Africa next.

Three-time champions Nigeria have looked remarkably sound defensively, with coach Jose Peseiro openly admitting keeping clean sheets is his number one priority.

That is despite the Super Eagles' impressive array of attacking options around superstar Victor Osimhen, the African player of the year.

"My responsibility is to choose the best way to win this competition," Peseiro said when asked about his decision to put the focus on the defence.

"I chose another strategy, and the players believe in it -- don't concede goals because we will score at least one."

He astutely pointed out that Senegal only scored one goal in their first three games at the last AFCON before going on to lift the trophy.

Nigeria's meeting with Cameroon is a mouthwatering repeat of the 2000 final, when Rigobert Song's