Usain Bolt has produced perhaps his greatest performance of all as he put a troubled build-up behind him to beat two-time doper and clear favourite Justin Gatlin to retain his world 100m title.Bolt’s 9.79 seconds was more than two tenths off his world record.
Usain Bolt wins world 100m title
![Usain Bolt has produced perhaps his greatest performance of all as he put a troubled build-up behind him to beat two-time doper and clear favourite Justin Gatlin to retain his world 100m title.Bolt's 9.79 seconds was more than two tenths off his world record.](https://youngmindsonline.org/wp-content/uploads/2015/08/Usain-Bolt-wins-world-100m-title.jpg)