In the early days of the Africa Cup of Nations there were only eight finalists, right up to 1990 when the field was increased to 12.
It meant little opportunity for smaller countries to get to the finals, never mind upsetting the odds. The field was increased to 16 teams in South Africa in 1996 and 24 at the 2019 edition in Egypt, which has meant more David v Goliath clashes and the potential for upsets.
With the latest edition to kick off in the Ivory Coast on Saturday, we look back at some of the greatest shocks in Cup of Nations history.
1974: Zambia got through the group stage on their tournament debut and into the semifinal, where they upset defending champions Congo. It was goalless at halftime but Bernard Chanda scored a second-half hat-trick as Zambia won 4-2.
1986: Senegal had not qualified for eight successive editions when they finally made it to the tournament in Egypt and, in the opening match in Cairo, beat the host nation with a goal midway through the second half from Theirno Youm. Egypt bounced back to top the group and win the tournament.
1994: Hosts Tunisia were 2-0 down at halftime, had a player sent off and had fired their coach Youssef Zouaoui after losing their opening game to Mali. They had to beat Zaire in their next game to go through but drew and left the tournament early without any home interest, meaning they had to ship soldiers in to fill the stands.
2004: In Tunisia again 10 years on, Rwanda were shock qualifiers and although both they and the Democratic Republic of Congo had already been eliminated after two matches, the 1-0 win for the small east African country over their giant neighbours, courtesy of a second-half strike from Said Abed Makasi saw them leave the tournament on a high
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