In the Seoul Olympics of 1988, Ben Johnson broke the 100m record with a time of 9.79 seconds, but the gold medal was awarded to rival Carl Lewis due to doping. Eleven years later it was discovered that Carl Lewis was also guilty of doping prior to the Olympics. (http://bit.ly/VK39Xf, http://amzn.to/1lECzU8)

This week’s theme: Cheating in sport