It’s crunch time at the Africa Cup of Nations, with the continent’s biggest teams assembling in a historically heavyweight line-up. With Senegal closing on victory over Mali in the first quarter-final, the seven sides left will all be former champions, with 22 continental titles between them. That leaves Morocco, the hosts and highest-ranked team, under severe pressure to deliver a first title since 1976. The Atlas Lions cannot shake off their status as favourites, but the path to glory could scarcely be more perilous.