The Senegal national football side has just been stripped of the Africa Cup of Nations. The decision , following misconduct in the tournament final, is controversial but far from unique. It is only the latest example in a string of sporting titles or results being changed. Ben Johnson 1988 Canada's Ben Johnson shocked the world with a record-breaking time of 9.79secs in the final of the 100m sprint to secure the gold medal at the Olympics in 1988. Image: Sprinter Ben Johnson leads the 100m