For 9.81 glorious seconds on Sunday, all the ills that have dogged athletics recently were forgotten as Usain Bolt stormed to victory in the 100 meters final to become the first man to win three successive Olympic titles on the track.
The Jamaican superstar trailed arch-rival Justin Gatlin, roundly booed by the Rio crowd for his doping past, until the 70 meter mark but then swept past the American, finding time to pat his chest as he crossed the line a meter clear.