Brilliant Bolt storms to third 200m gold

Usain Bolt wrote another chapter of improbable Olympic history with a third consecutive 200m crown on Thursday as Ashton Eaton led an American gold rush by clinching back-to-back decathlon titles. Canada's Andre De Grasse took silver in 20.02sec, just ahead of France's Christophe Lemaitre, who took bronze in 20.12. This is why I said it's my last Olympics.